src/proto-p10.c

   1 /* proto-p10.c - IRC protocol output
   2  * Copyright 2000-2004 srvx Development Team
   3  *
   4  * This file is part of x3.
   5  *
   6  * x3 is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with srvx; if not, write to the Free Software Foundation,
  18  * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
  19  */
  20
  21 #include "nickserv.h"
  22 #include "chanserv.h"
  23 #include "hosthiding.h"
  24 #include "proto-common.c"
  25 #include "opserv.h"
  26
  27 /* Full commands. */
  28 #define CMD_ACCOUNT             "ACCOUNT"
  29 #define CMD_ADMIN               "ADMIN"
  30 #define CMD_ASLL                "ASLL"
  31 #define CMD_AWAY                "AWAY"
  32 #define CMD_BURST               "BURST"
  33 #define CMD_CLEARMODE           "CLEARMODE"
  34 #define CMD_CLOSE               "CLOSE"
  35 #define CMD_CNOTICE             "CNOTICE"
  36 #define CMD_CONNECT             "CONNECT"
  37 #define CMD_CPRIVMSG            "CPRIVMSG"
  38 #define CMD_CREATE              "CREATE"
  39 #define CMD_DESTRUCT            "DESTRUCT"
  40 #define CMD_DESYNCH             "DESYNCH"
  41 #define CMD_DIE                 "DIE"
  42 #define CMD_DNS                 "DNS"
  43 #define CMD_EOB                 "END_OF_BURST"
  44 #define CMD_EOB_ACK             "EOB_ACK"
  45 #define CMD_ERROR               "ERROR"
  46 #define CMD_FAKEHOST            "FAKE"
  47 #define CMD_GET                 "GET"
  48 #define CMD_GLINE               "GLINE"
  49 #define CMD_HASH                "HASH"
  50 #define CMD_HELP                "HELP"
  51 #define CMD_INFO                "INFO"
  52 #define CMD_INVITE              "INVITE"
  53 #define CMD_ISON                "ISON"
  54 #define CMD_JOIN                "JOIN"
  55 #define CMD_JUPE                "JUPE"
  56 #define CMD_KICK                "KICK"
  57 #define CMD_KILL                "KILL"
  58 #define CMD_LINKS               "LINKS"
  59 #define CMD_LIST                "LIST"
  60 #define CMD_LUSERS              "LUSERS"
  61 #define CMD_MAP                 "MAP"
  62 #define CMD_MARK                "MARK"
  63 #define CMD_MODE                "MODE"
  64 #define CMD_MOTD                "MOTD"
  65 #define CMD_NAMES               "NAMES"
  66 #define CMD_NICK                "NICK"
  67 #define CMD_NOTICE              "NOTICE"
  68 #define CMD_OPER                "OPER"
  69 #define CMD_OPMODE              "OPMODE"
  70 #define CMD_PART                "PART"
  71 #define CMD_PASS                "PASS"
  72 #define CMD_PING                "PING"
  73 #define CMD_PONG                "PONG"
  74 #define CMD_POST                "POST"
  75 #define CMD_PRIVMSG             "PRIVMSG"
  76 #define CMD_PRIVS               "PRIVS"
  77 #define CMD_PROTO               "PROTO"
  78 #define CMD_QUIT                "QUIT"
  79 #define CMD_REHASH              "REHASH"
  80 #define CMD_RESET               "RESET"
  81 #define CMD_RESTART             "RESTART"
  82 #define CMD_RPING               "RPING"
  83 #define CMD_RPONG               "RPONG"
  84 #define CMD_SERVER              "SERVER"
  85 #define CMD_SERVLIST            "SERVLIST"
  86 #define CMD_SERVSET             "SERVSET"
  87 #define CMD_SET                 "SET"
  88 #define CMD_SETTIME             "SETTIME"
  89 #define CMD_SHUN                "SHUN"
  90 #define CMD_SILENCE             "SILENCE"
  91 #define CMD_SQUERY              "SQUERY"
  92 #define CMD_SQUIT               "SQUIT"
  93 #define CMD_STATS               "STATS"
  94 #define CMD_SVSNICK             "SVSNICK"
  95 #define CMD_SWHOIS              "SWHOIS"
  96 #define CMD_TIME                "TIME"
  97 #define CMD_TOPIC               "TOPIC"
  98 #define CMD_TRACE               "TRACE"
  99 #define CMD_UPING               "UPING"
 100 #define CMD_USER                "USER"
 101 #define CMD_USERHOST            "USERHOST"
 102 #define CMD_USERIP              "USERIP"
 103 #define CMD_VERSION             "VERSION"
 104 #define CMD_WALLCHOPS           "WALLCHOPS"
 105 #define CMD_WALLOPS             "WALLOPS"
 106 #define CMD_WALLHOPS            "WALLHOPS"
 107 #define CMD_WALLUSERS           "WALLUSERS"
 108 #define CMD_WALLVOICES          "WALLVOICES"
 109 #define CMD_WALLHOPS            "WALLHOPS"
 110 #define CMD_WHO                 "WHO"
 111 #define CMD_WHOIS               "WHOIS"
 112 #define CMD_WHOWAS              "WHOWAS"
 113
 114 /* Tokenized commands. */
 115 #define TOK_ACCOUNT             "AC"
 116 #define TOK_ADMIN               "AD"
 117 #define TOK_ASLL                "LL"
 118 #define TOK_AWAY                "A"
 119 #define TOK_BURST               "B"
 120 #define TOK_CLEARMODE           "CM"
 121 #define TOK_CLOSE               "CLOSE"
 122 #define TOK_CNOTICE             "CN"
 123 #define TOK_CONNECT             "CO"
 124 #define TOK_CPRIVMSG            "CP"
 125 #define TOK_CREATE              "C"
 126 #define TOK_DESTRUCT            "DE"
 127 #define TOK_DESYNCH             "DS"
 128 #define TOK_DIE                 "DIE"
 129 #define TOK_DNS                 "DNS"
 130 #define TOK_EOB                 "EB"
 131 #define TOK_EOB_ACK             "EA"
 132 #define TOK_ERROR               "Y"
 133 #define TOK_EXEMPT              "EX"
 134 #define TOK_FAKEHOST            "FA"
 135 #define TOK_GET                 "GET"
 136 #define TOK_GLINE               "GL"
 137 #define TOK_HASH                "HASH"
 138 #define TOK_HELP                "HELP"
 139 #define TOK_INFO                "F"
 140 #define TOK_INVITE              "I"
 141 #define TOK_ISON                "ISON"
 142 #define TOK_JOIN                "J"
 143 #define TOK_JUPE                "JU"
 144 #define TOK_KICK                "K"
 145 #define TOK_KILL                "D"
 146 #define TOK_LINKS               "LI"
 147 #define TOK_LIST                "LIST"
 148 #define TOK_LUSERS              "LU"
 149 #define TOK_MAP                 "MAP"
 150 #define TOK_MARK                "MK"
 151 #define TOK_MODE                "M"
 152 #define TOK_MOTD                "MO"
 153 #define TOK_NAMES               "E"
 154 #define TOK_NICK                "N"
 155 #define TOK_NOTICE              "O"
 156 #define TOK_OPER                "OPER"
 157 #define TOK_OPMODE              "OM"
 158 #define TOK_PART                "L"
 159 #define TOK_PASS                "PA"
 160 #define TOK_PING                "G"
 161 #define TOK_PONG                "Z"
 162 #define TOK_POST                "POST"
 163 #define TOK_PRIVMSG             "P"
 164 #define TOK_PRIVS               "PRIVS"
 165 #define TOK_PROTO               "PROTO"
 166 #define TOK_QUIT                "Q"
 167 #define TOK_REHASH              "REHASH"
 168 #define TOK_RESET               "RESET"
 169 #define TOK_RESTART             "RESTART"
 170 #define TOK_RPING               "RI"
 171 #define TOK_RPONG               "RO"
 172 #define TOK_SERVER              "S"
 173 #define TOK_SERVLIST            "SERVSET"
 174 #define TOK_SERVSET             "SERVSET"
 175 #define TOK_SET                 "SET"
 176 #define TOK_SETTIME             "SE"
 177 #define TOK_SHUN                "SU"
 178 #define TOK_SILENCE             "U"
 179 #define TOK_SQUERY              "SQUERY"
 180 #define TOK_SQUIT               "SQ"
 181 #define TOK_STATS               "R"
 182 #define TOK_SVSNICK             "SN"
 183 #define TOK_SWHOIS              "SW"
 184 #define TOK_TIME                "TI"
 185 #define TOK_TOPIC               "T"
 186 #define TOK_TRACE               "TR"
 187 #define TOK_UPING               "UP"
 188 #define TOK_USER                "USER"
 189 #define TOK_USERHOST            "USERHOST"
 190 #define TOK_USERIP              "USERIP"
 191 #define TOK_VERSION             "V"
 192 #define TOK_WALLCHOPS           "WC"
 193 #define TOK_WALLOPS             "WA"
 194 #define TOK_WALLHOPS            "WH"
 195 #define TOK_WALLUSERS           "WU"
 196 #define TOK_WALLVOICES          "WV"
 197 #define TOK_WALLHOPS            "WH"
 198 #define TOK_WHO                 "H"
 199 #define TOK_WHOIS               "W"
 200 #define TOK_WHOWAS              "X"
 201
 202 /* Protocol messages; aliased to full commands or tokens depending
 203    on compile-time configuration. ircu prefers tokens WITH THE
 204    EXCEPTION OF THE SERVER AND PASS COMMANDS, which cannot be
 205    tokenized, because clients' (ie. a linking server) commands are
 206    only checked against the full command list.
 207 */
 208 #if defined(ENABLE_TOKENS)
 209 #define TYPE(NAME)              TOK_ ## NAME
 210 #else /* !ENABLE_TOKENS */
 211 #define TYPE(NAME)              CMD_ ## NAME
 212 #endif /* ENABLE_TOKENS */
 213
 214 #define P10_ACCOUNT             TYPE(ACCOUNT)
 215 #define P10_ADMIN               TYPE(ADMIN)
 216 #define P10_ASLL                TYPE(ASLL)
 217 #define P10_AWAY                TYPE(AWAY)
 218 #define P10_BURST               TYPE(BURST)
 219 #define P10_CLEARMODE           TYPE(CLEARMODE)
 220 #define P10_CLOSE               TYPE(CLOSE)
 221 #define P10_CNOTICE             TYPE(CNOTICE)
 222 #define P10_CONNECT             TYPE(CONNECT)
 223 #define P10_CPRIVMSG            TYPE(CPRIVMSG)
 224 #define P10_CREATE              TYPE(CREATE)
 225 #define P10_DESTRUCT            TYPE(DESTRUCT)
 226 #define P10_DESYNCH             TYPE(DESYNCH)
 227 #define P10_DIE                 TYPE(DIE)
 228 #define P10_DNS                 TYPE(DNS)
 229 #define P10_EOB                 TYPE(EOB)
 230 #define P10_EOB_ACK             TYPE(EOB_ACK)
 231 #define P10_ERROR               TYPE(ERROR)
 232 #define P10_FAKEHOST            TYPE(FAKEHOST)
 233 #define P10_GET                 TYPE(GET)
 234 #define P10_GLINE               TYPE(GLINE)
 235 #define P10_HASH                TYPE(HASH)
 236 #define P10_HELP                TYPE(HELP)
 237 #define P10_INFO                TYPE(INFO)
 238 #define P10_INVITE              TYPE(INVITE)
 239 #define P10_ISON                TYPE(ISON)
 240 #define P10_JOIN                TYPE(JOIN)
 241 #define P10_JUPE                TYPE(JUPE)
 242 #define P10_KICK                TYPE(KICK)
 243 #define P10_KILL                TYPE(KILL)
 244 #define P10_LINKS               TYPE(LINKS)
 245 #define P10_LIST                TYPE(LIST)
 246 #define P10_LUSERS              TYPE(LUSERS)
 247 #define P10_MAP                 TYPE(MAP)
 248 #define P10_MARK                TYPE(MARK)
 249 #define P10_MODE                TYPE(MODE)
 250 #define P10_MOTD                TYPE(MOTD)
 251 #define P10_NAMES               TYPE(NAMES)
 252 #define P10_NICK                TYPE(NICK)
 253 #define P10_NOTICE              TYPE(NOTICE)
 254 #define P10_OPER                TYPE(OPER)
 255 #define P10_OPMODE              TYPE(OPMODE)
 256 #define P10_PART                TYPE(PART)
 257 #define P10_PASS                CMD_PASS
 258 #define P10_PING                TYPE(PING)
 259 #define P10_PONG                TYPE(PONG)
 260 #define P10_POST                TYPE(POST)
 261 #define P10_PRIVMSG             TYPE(PRIVMSG)
 262 #define P10_PRIVS               TYPE(PRIVS)
 263 #define P10_PROTO               TYPE(PROTO)
 264 #define P10_QUIT                TYPE(QUIT)
 265 #define P10_REHASH              TYPE(REHASH)
 266 #define P10_RESET               TYPE(RESET)
 267 #define P10_RESTART             TYPE(RESTART)
 268 #define P10_RPING               TYPE(RPING)
 269 #define P10_RPONG               TYPE(RPONG)
 270 #define P10_SERVER              CMD_SERVER
 271 #define P10_SERVLIST            TYPE(SERVLIST)
 272 #define P10_SERVSET             TYPE(SERVSET)
 273 #define P10_SET                 TYPE(SET)
 274 #define P10_SETTIME             TYPE(SETTIME)
 275 #define P10_SHUN                TYPE(SHUN)
 276 #define P10_SILENCE             TYPE(SILENCE)
 277 #define P10_SQUERY              TYPE(SQUERY)
 278 #define P10_SQUIT               TYPE(SQUIT)
 279 #define P10_STATS               TYPE(STATS)
 280 #define P10_SVSNICK             TYPE(SVSNICK)
 281 #define P10_SWHOIS              TYPE(SWHOIS)
 282 #define P10_TIME                TYPE(TIME)
 283 #define P10_TOPIC               TYPE(TOPIC)
 284 #define P10_TRACE               TYPE(TRACE)
 285 #define P10_UPING               TYPE(UPING)
 286 #define P10_USER                TYPE(USER)
 287 #define P10_USERHOST            TYPE(USERHOST)
 288 #define P10_USERIP              TYPE(USERIP)
 289 #define P10_VERSION             TYPE(VERSION)
 290 #define P10_WALLCHOPS           TYPE(WALLCHOPS)
 291 #define P10_WALLOPS             TYPE(WALLOPS)
 292 #define P10_WALLHOPS            TYPE(WALLHOPS)
 293 #define P10_WALLUSERS           TYPE(WALLUSERS)
 294 #define P10_WALLVOICES          TYPE(WALLVOICES)
 295 #define P10_WHO                 TYPE(WHO)
 296 #define P10_WHOIS               TYPE(WHOIS)
 297 #define P10_WHOWAS              TYPE(WHOWAS)
 298 #define P10_EXEMPT              TYPE(EXEMPT)
 299
 300 /* Servers claiming to have a boot or link time before PREHISTORY
 301  * trigger errors to the log.  We hope no server has been running
 302  * constantly since September 1994.  :)
 303  */
 304 #define PREHISTORY 780000000
 305
 306 static struct server *servers_num[64*64];
 307 static privmsg_func_t *privmsg_funcs;
 308 static unsigned int num_privmsg_funcs;
 309 static privmsg_func_t *notice_funcs;
 310 static unsigned int num_notice_funcs;
 311 static struct dict *unbursted_channels;
 312 static char *his_servername;
 313 static char *his_servercomment;
 314 static int extended_accounts;
 315
 316 static struct userNode *AddUser(struct server* uplink, const char *nick, const char *ident, const char *hostname, const char *modes, const char *numeric, const char *userinfo, time_t timestamp, const char *realip);
 317
 318 extern int off_channel;
 319
 320 static int parse_oplevel(char *str);
 321
 322 /* Numerics can be XYY, XYYY, or XXYYY; with X's identifying the
 323  * server and Y's indentifying the client on that server. */
 324 struct server*
 325 GetServerN(const char *numeric)
 326 {
 327     switch (strlen(numeric)) {
 328     default:
 329         return servers_num[base64toint(numeric, 2)];
 330     case 4:
 331     case 3:
 332     case 1:
 333         return servers_num[base64toint(numeric, 1)];
 334     case 0:
 335         return NULL;
 336     }
 337 }
 338
 339 struct userNode*
 340 GetUserN(const char *numeric) /* using numeric */
 341 {
 342     struct userNode *un;
 343     struct server *s;
 344     int n, slen, ulen;
 345
 346     switch (strlen(numeric)) {
 347     default:
 348         log_module(MAIN_LOG, LOG_WARNING, "GetUserN(%s): numeric too long!", numeric);
 349         return NULL;
 350     case 5: slen = 2; ulen = 3; break;
 351     case 4: slen = 1; ulen = 3; break;
 352     case 3: slen = 1; ulen = 2; break;
 353     case 2: case 1: case 0:
 354         log_module(MAIN_LOG, LOG_WARNING, "GetUserN(%s): numeric too short!", numeric);
 355         return NULL;
 356     }
 357     if (!(s = servers_num[base64toint(numeric, slen)])) {
 358         log_module(MAIN_LOG, LOG_WARNING, "GetUserN(%s): couldn't find server (len=%d)!", numeric, slen);
 359         return NULL;
 360     }
 361     n = base64toint(numeric+slen, ulen) & s->num_mask;
 362     if (!(un = s->users[n])) {
 363         log_module(MAIN_LOG, LOG_WARNING, "GetUserN(%s) couldn't find user!", numeric);
 364     }
 365     return un;
 366 }
 367
 368 static void
 369 privmsg_user_helper(struct userNode *un, void *data)
 370 {
 371     struct privmsg_desc *pd = data;
 372     unsigned int num = un->num_local;
 373     if (!pd->is_notice) {
 374         if ((num < num_privmsg_funcs) && privmsg_funcs[num]) {
 375             privmsg_funcs[num](pd->user, un, pd->text, pd->is_qualified);
 376         }
 377     } else {
 378         if ((num < num_notice_funcs) && notice_funcs[num]) {
 379             notice_funcs[num](pd->user, un, pd->text, pd->is_qualified);
 380         }
 381     }
 382 }
 383
 384 /* equiv to user doing /connect server port target */
 385 void irc_connect(struct userNode *user, char *server, unsigned int port, struct server *target)
 386 {
 387     putsock("%s " P10_CONNECT " %s %d %s", user->numeric, server, port, target->numeric);
 388 }
 389
 390 void
 391 irc_squit_route(struct server *srv, const char *message, ...)
 392 {
 393     va_list arg_list;
 394     char buffer[MAXLEN];
 395     va_start(arg_list, message);
 396     vsnprintf(buffer, MAXLEN-2, message, arg_list);
 397     buffer[MAXLEN-1] = 0;
 398
 399     /* When would we squit ourselves exactly?? -Rubin */
 400     if(srv == self && cManager.uplink->state == CONNECTED ) {
 401         unsigned int i;
 402
 403         /* Quit all clients linked to me. */
 404         for(i = 0; i <= self->num_mask; i++) {
 405             if(!self->users[i])
 406                 continue;
 407             irc_quit(self->users[i], buffer);
 408         }
 409     }
 410
 411     putsock("%s " P10_SQUIT " %s %d :%s", self->numeric, srv->name, 0, buffer);
 412
 413     if(srv == self) {
 414         /* Force a reconnect to the currently selected server. */
 415         cManager.uplink->tries = 0;
 416         log_module(MAIN_LOG, LOG_INFO, "Squitting from uplink: %s", buffer);
 417         close_socket();
 418     }
 419 }
 420
 421 void
 422 irc_server(struct server *srv)
 423 {
 424     char extranum[COMBO_NUMERIC_LEN+1];
 425
 426     inttobase64(extranum, srv->num_mask, (srv->numeric[1] || (srv->num_mask >= 64*64)) ? 3 : 2);
 427     if (srv == self) {
 428         putsock(P10_SERVER " %s %d %li %li J10 %s%s +s6 :%s",
 429                 srv->name, srv->hops+1, srv->boot, srv->link, srv->numeric, extranum, srv->description);
 430     } else {
 431         putsock("%s " P10_SERVER " %s %d %li %li %c10 %s%s +s6 :%s",
 432                 self->numeric, srv->name, srv->hops+1, srv->boot, srv->link, (srv->self_burst ? 'J' : 'P'), srv->numeric, extranum, srv->description);
 433     }
 434 }
 435
 436 static void
 437 irc_p10_pton(irc_in_addr_t *ip, const char *input)
 438 {
 439     if (strlen(input) == 6) {
 440         unsigned int value;
 441         memset(ip, 0, 6 * sizeof(ip->in6[0]));
 442         value = base64toint(input, 6);
 443         if (value)
 444             ip->in6[5] = htons(65535);
 445         ip->in6[6] = htons(value >> 16);
 446         ip->in6[7] = htons(value & 65535);
 447     } else {
 448         unsigned int pos = 0;
 449         do {
 450             if (*input == '_') {
 451                 unsigned int left;
 452                 for (left = (25 - strlen(input)) / 3; left; left--)
 453                     ip->in6[pos++] = 0;
 454                 input++;
 455             } else {
 456                 ip->in6[pos++] = ntohs(base64toint(input, 3));
 457                 input += 3;
 458             }
 459         } while (pos < 8);
 460     }
 461 }
 462
 463 static void
 464 irc_p10_ntop(char *output, const irc_in_addr_t *ip)
 465 {
 466     if (!irc_in_addr_is_valid(*ip)) {
 467         strcpy(output, "AAAAAA");
 468     } else if (irc_in_addr_is_ipv4(*ip)) {
 469         unsigned int in4;
 470         in4 = (ntohs(ip->in6[6]) << 16) | ntohs(ip->in6[7]);
 471         inttobase64(output, in4, 6);
 472         output[6] = '\0';
 473     } else if (irc_in_addr_is_ipv6(*ip)) {
 474         unsigned int max_start, max_zeros, curr_zeros, zero, ii;
 475         /* Can start by printing out the leading non-zero parts. */
 476         for (ii = 0; (ip->in6[ii]) && (ii < 8); ++ii) {
 477             inttobase64(output, ntohs(ip->in6[ii]), 3);
 478             output += 3;
 479         }
 480         /* Find the longest run of zeros. */
 481         for (max_start = zero = ii, max_zeros = curr_zeros = 0; ii < 8; ++ii) {
 482             if (!ip->in6[ii])
 483                 curr_zeros++;
 484             else if (curr_zeros > max_zeros) {
 485                 max_start = ii - curr_zeros;
 486                 max_zeros = curr_zeros;
 487                 curr_zeros = 0;
 488             }
 489         }
 490         if (curr_zeros > max_zeros) {
 491             max_start = ii - curr_zeros;
 492             max_zeros = curr_zeros;
 493             curr_zeros = 0;
 494         }
 495         /* Print the rest of the address */
 496         for (ii = zero; ii < 8; ) {
 497             if ((ii == max_start) && max_zeros) {
 498                 *output++ = '_';
 499                 ii += max_zeros;
 500             } else {
 501                 inttobase64(output, ntohs(ip->in6[ii]), 3);
 502                 output += 3;
 503             }
 504         }
 505         *output = '\0';
 506     } else {
 507         strcpy(output, "???");
 508     }
 509 }
 510
 511 void
 512 irc_user(struct userNode *user)
 513 {
 514     char b64ip[25];
 515     if (!user)
 516         return;
 517     irc_p10_ntop(b64ip, &user->ip);
 518     if (user->modes) {
 519         int modelen;
 520         char modes[32];
 521
 522         modelen = 0;
 523         if (IsOper(user))
 524             modes[modelen++] = 'o';
 525         if (IsInvisible(user))
 526             modes[modelen++] = 'i';
 527         if (IsWallOp(user))
 528             modes[modelen++] = 'w';
 529         if (IsService(user))
 530             modes[modelen++] = 'k';
 531         if (IsServNotice(user))
 532             modes[modelen++] = 's';
 533         if (IsDeaf(user))
 534             modes[modelen++] = 'd';
 535         if (IsGlobal(user))
 536             modes[modelen++] = 'g';
 537         // sethost - reed/apples
 538         // if (IsHelperIrcu(user))
 539         if (IsSetHost(user))
 540             modes[modelen++] = 'h';
 541         if (IsFakeHost(user))
 542             modes[modelen++] = 'f';
 543         if (IsHiddenHost(user))
 544             modes[modelen++] = 'x';
 545         modes[modelen] = 0;
 546
 547         /* we don't need to put the + in modes because it's in the format string. */
 548         putsock("%s " P10_NICK " %s %d %li %s %s +%s %s %s :%s",
 549                 user->uplink->numeric, user->nick, user->uplink->hops+1, user->timestamp, user->ident, user->hostname, modes, b64ip, user->numeric, user->info);
 550     } else {
 551         putsock("%s " P10_NICK " %s %d %li %s %s %s %s :%s",
 552                 user->uplink->numeric, user->nick, user->uplink->hops+1, user->timestamp, user->ident, user->hostname, b64ip, user->numeric, user->info);
 553     }
 554 }
 555
 556 void
 557 irc_rename(struct userNode *user, const char *new_handle)
 558 {
 559     if(extended_accounts)
 560         putsock("%s " P10_ACCOUNT " %s M %s", self->numeric, user->numeric, new_handle);
 561 }
 562
 563 void
 564 irc_delete(struct userNode *user)
 565 {
 566     if(extended_accounts)
 567         putsock("%s " P10_ACCOUNT " %s U", self->numeric, user->numeric);
 568 }
 569
 570 void
 571 irc_account(struct userNode *user, const char *stamp, time_t timestamp)
 572 {
 573     if(extended_accounts)
 574         putsock("%s " P10_ACCOUNT " %s R %s %lu", self->numeric, user->numeric, stamp, timestamp);
 575     else
 576         putsock("%s " P10_ACCOUNT " %s %s %lu", self->numeric, user->numeric, stamp, timestamp);
 577 }
 578
 579 void
 580 irc_fakehost(struct userNode *user, const char *host)
 581 {
 582     putsock("%s " P10_FAKEHOST " %s %s", self->numeric, user->numeric, host);
 583 }
 584
 585 void
 586 irc_regnick(UNUSED_ARG(struct userNode *user))
 587 {
 588     /* no operation here */
 589 }
 590
 591 void
 592 irc_nick(struct userNode *user, UNUSED_ARG(const char *old_nick))
 593 {
 594     putsock("%s " P10_NICK " %s "FMT_TIME_T, user->numeric, user->nick, now);
 595 }
 596
 597 void
 598 irc_fetchtopic(struct userNode *from, const char *to)
 599 {
 600     if (!from || !to)
 601         return;
 602     putsock("%s " P10_TOPIC " %s", from->numeric, to);
 603 }
 604
 605 void
 606 irc_squit(struct server *srv, const char *message, const char *service_message)
 607 {
 608     if (!service_message)
 609         service_message = message;
 610
 611     /* Are we leaving the network? */
 612     if (srv == self && cManager.uplink->state == CONNECTED) {
 613         unsigned int i;
 614
 615         /* Quit all clients linked to me. */
 616         for (i = 0; i <= self->num_mask; i++) {
 617             if (!self->users[i])
 618                 continue;
 619             irc_quit(self->users[i], service_message);
 620         }
 621     }
 622
 623     putsock("%s " P10_SQUIT " %s %d :%s", self->numeric, srv->name, 0, message);
 624
 625     if (srv == self) {
 626         /* Force a reconnect to the currently selected server. */
 627         cManager.uplink->tries = 0;
 628         log_module(MAIN_LOG, LOG_INFO, "Squitting from uplink: %s", message);
 629         close_socket();
 630     }
 631 }
 632
 633 void
 634 irc_wallchops(struct userNode *from, const char *to, const char *message)
 635 {
 636     putsock("%s " P10_WALLCHOPS " %s :%s", from->numeric, to, message);
 637 }
 638
 639 void
 640 irc_wallops(const char *format, ...)
 641 {
 642     va_list arg_list;
 643     char buffer[MAXLEN];
 644     va_start(arg_list, format);
 645     vsnprintf(buffer, MAXLEN-2, format, arg_list);
 646     buffer[MAXLEN-1] = 0;
 647     putsock("%s " P10_WALLOPS " :%s", self->numeric, buffer);
 648 }
 649
 650 void
 651 irc_notice(struct userNode *from, const char *to, const char *message)
 652 {
 653     putsock("%s " P10_NOTICE " %s :%s", from->numeric, to, message);
 654 }
 655
 656 void
 657 irc_notice_user(struct userNode *from, struct userNode *to, const char *message)
 658 {
 659     putsock("%s " P10_NOTICE " %s :%s", from->numeric, to->numeric, message);
 660 }
 661
 662 void
 663 irc_privmsg(struct userNode *from, const char *to, const char *message)
 664 {
 665     putsock("%s " P10_PRIVMSG " %s :%s", from->numeric, to, message);
 666 }
 667
 668 void
 669 irc_eob(void)
 670 {
 671     putsock("%s " P10_EOB, self->numeric);
 672 }
 673
 674 void
 675 irc_eob_ack(void)
 676 {
 677     putsock("%s " P10_EOB_ACK, self->numeric);
 678 }
 679
 680 void
 681 irc_ping(const char *payload)
 682 {
 683     putsock("%s " P10_PING " :%s", self->numeric, payload);
 684 }
 685
 686 void
 687 irc_pong(const char *who, const char *data)
 688 {
 689     putsock("%s " P10_PONG " %s :%s", self->numeric, who, data);
 690 }
 691
 692 void
 693 irc_pong_asll(const char *who, const char *orig_ts)
 694 {
 695     char *delim;
 696     struct timeval orig;
 697     struct timeval now;
 698     int diff;
 699
 700     orig.tv_sec = strtoul(orig_ts, &delim, 10);
 701     orig.tv_usec = (*delim == '.') ? strtoul(delim + 1, NULL, 10) : 0;
 702     gettimeofday(&now, NULL);
 703     diff = (now.tv_sec - orig.tv_sec) * 1000 + (now.tv_usec - orig.tv_usec) / 1000;
 704     putsock("%s " P10_PONG " %s %s %d " FMT_TIME_T ".%06u", self->numeric, who, orig_ts, diff, now.tv_sec, (unsigned)now.tv_usec);
 705 }
 706
 707 void
 708 irc_pass(const char *passwd)
 709 {
 710     putsock(P10_PASS " :%s", passwd);
 711 }
 712
 713 void
 714 irc_introduce(const char *passwd)
 715 {
 716     void timed_send_ping(void *data);
 717
 718     self->self_burst = self->burst = 1;
 719     irc_pass(passwd);
 720     irc_server(self);
 721     burst_length = 0;
 722     timeq_add(now + ping_freq, timed_send_ping, 0);
 723 }
 724
 725 void
 726 irc_gline(struct server *srv, struct gline *gline, int silent)
 727 {
 728     putsock("%s " P10_GLINE " %s +%s %ld :%s<%s> %s",
 729             self->numeric, (srv ? srv->numeric : "*"), gline->target, gline->expires-now, silent ? "AUTO " : "", gline->issuer, gline->reason);
 730 }
 731
 732 void
 733 irc_shun(struct server *srv, struct shun *shun)
 734 {
 735     putsock("%s " P10_SHUN " %s +%s %ld :<%s> %s",
 736             self->numeric, (srv ? srv->numeric : "*"), shun->target, shun->expires-now, shun->issuer, shun->reason);
 737 }
 738
 739 void
 740 irc_settime(const char *srv_name_mask, time_t new_time)
 741 {
 742     ioset_set_time(new_time);
 743     if (!strcmp(srv_name_mask, "*"))
 744         srv_name_mask = "";
 745     putsock("%s " P10_SETTIME " " FMT_TIME_T " %s", self->numeric, new_time, srv_name_mask);
 746 }
 747
 748 void
 749 irc_ungline(const char *mask)
 750 {
 751     putsock("%s " P10_GLINE " * -%s", self->numeric, mask);
 752 }
 753
 754 void
 755 irc_unshun(const char *mask)
 756 {
 757     putsock("%s " P10_SHUN " * -%s", self->numeric, mask);
 758 }
 759
 760 static void
 761 irc_burst(struct chanNode *chan)
 762 {
 763     char burst_line[512];
 764     int pos, base_len, len;
 765     struct modeNode *mn;
 766     struct banNode *bn;
 767     struct exemptNode *en;
 768     long last_mode=-1;
 769     unsigned int n;
 770
 771     base_len = sprintf(burst_line, "%s " P10_BURST " %s " FMT_TIME_T " ",
 772                        self->numeric, chan->name, chan->timestamp);
 773     len = irc_make_chanmode(chan, burst_line+base_len);
 774     pos = base_len + len;
 775     if (len)
 776         burst_line[pos++] = ' ';
 777
 778     /* dump the users */
 779     for (n=0; n<chan->members.used; n++) {
 780         mn = chan->members.list[n];
 781         if (pos > 500) {
 782             burst_line[pos-1] = 0; /* -1 to back up over the space or comma */
 783             putsock("%s", burst_line);
 784             pos = base_len;
 785             last_mode = -1;
 786         }
 787         memcpy(burst_line+pos, mn->user->numeric, strlen(mn->user->numeric));
 788         pos += strlen(mn->user->numeric);
 789         if (mn->modes && (mn->modes != last_mode)) {
 790             last_mode = mn->modes;
 791             burst_line[pos++] = ':';
 792             if (last_mode & MODE_CHANOP)
 793                 burst_line[pos++] = 'o';
 794             if (last_mode & MODE_HALFOP)
 795                 burst_line[pos++] = 'h';
 796             if (last_mode & MODE_VOICE)
 797                 burst_line[pos++] = 'v';
 798         }
 799         if ((n+1)<chan->members.used)
 800             burst_line[pos++] = ',';
 801     }
 802     if (chan->banlist.used) {
 803         /* dump the bans */
 804         if (pos+2+strlen(chan->banlist.list[0]->ban) > 505) {
 805             burst_line[pos-1] = 0;
 806             putsock("%s", burst_line);
 807             pos = base_len;
 808         } else {
 809             burst_line[pos++] = ' ';
 810         }
 811
 812         burst_line[pos++] = ':';
 813         burst_line[pos++] = '%';
 814         base_len = pos;
 815         for (n=0; n<chan->banlist.used; n++) {
 816             bn = chan->banlist.list[n];
 817             len = strlen(bn->ban);
 818             if (pos+len+1 > 510) {
 819                 burst_line[pos-1] = 0; /* -1 to back up over the space or comma */
 820                 putsock("%s", burst_line);
 821                 pos = base_len;
 822             }
 823             memcpy(burst_line+pos, bn->ban, len);
 824             pos += len;
 825             burst_line[pos++] = ' ';
 826         }
 827     }
 828     if (chan->exemptlist.used) {
 829         /* dump the exempt */
 830         if (pos+2+strlen(chan->exemptlist.list[0]->exempt) > 505) {
 831             burst_line[pos-1] = 0;
 832             putsock("%s", burst_line);
 833             pos = base_len;
 834         } else {
 835             burst_line[pos++] = ' ';
 836         }
 837
 838         burst_line[pos++] = ' ';
 839         burst_line[pos++] = '~';
 840         burst_line[pos++] = ' ';
 841         base_len = pos;
 842         for (n=0; n<chan->exemptlist.used; n++) {
 843             en = chan->exemptlist.list[n];
 844             len = strlen(en->exempt);
 845             if (pos+len+1 > 510) {
 846                 burst_line[pos-1] = 0; /* -1 to back up over the space or comma */
 847                 putsock("%s", burst_line);
 848                 pos = base_len;
 849             }
 850             memcpy(burst_line+pos, en->exempt, len);
 851             pos += len;
 852             burst_line[pos++] = ' ';
 853         }
 854     }
 855     /* print the last line */
 856     burst_line[pos] = 0;
 857     putsock("%s", burst_line);
 858 }
 859
 860 void
 861 irc_quit(struct userNode *user, const char *message)
 862 {
 863     putsock("%s " P10_QUIT " :%s", user->numeric, message);
 864 }
 865
 866 void
 867 irc_error(const char *to, const char *message)
 868 {
 869     if (to) {
 870         putsock("%s " P10_ERROR " :%s", to, message);
 871     } else {
 872         putsock(":%s " P10_ERROR " :%s", self->name, message);
 873     }
 874 }
 875
 876 void
 877 irc_kill(struct userNode *from, struct userNode *target, const char *message)
 878 {
 879     if (from) {
 880         putsock("%s " P10_KILL " %s :%s!%s (%s)",
 881                 from->numeric, target->numeric, self->name, from->nick, message);
 882     } else {
 883         putsock("%s " P10_KILL " %s :%s (%s)",
 884                 self->numeric, target->numeric, self->name, message);
 885     }
 886 }
 887
 888 void
 889 irc_mode(struct userNode *from, struct chanNode *target, const char *modes)
 890 {
 891     call_channel_mode_funcs(from, target, (char **)&modes, 0);
 892     putsock("%s " P10_MODE " %s %s "FMT_TIME_T,
 893             (from ? from->numeric : self->numeric),
 894             target->name, modes, target->timestamp);
 895 }
 896
 897 /* Added to allow services to mode users
 898    2005 - 8 - 10 by Life4Christ
 899 */
 900 void
 901 irc_umode(struct userNode *target, const char *modes)
 902 {
 903     putsock("%s " P10_MODE " %s %s ",self->numeric,target->nick, modes);
 904 }
 905
 906
 907 void
 908 irc_invite(struct userNode *from, struct userNode *who, struct chanNode *to)
 909 {
 910     putsock("%s " P10_INVITE " %s %s", from->numeric, who->nick, to->name);
 911 }
 912
 913 void
 914 irc_silence(struct userNode *who, const char *mask, int add)
 915 {
 916     putsock("%s " P10_SILENCE " %s %s%s", self->numeric, who->numeric, add ? "+" : "-", mask);
 917 }
 918
 919 void
 920 irc_join(struct userNode *who, struct chanNode *what)
 921 {
 922     if (what->members.used == 1) {
 923         putsock("%s " P10_CREATE " %s %lu",
 924                 who->numeric, what->name, what->timestamp);
 925     } else {
 926         putsock("%s " P10_JOIN " %s %lu", who->numeric, what->name, what->timestamp);
 927     }
 928 }
 929
 930 void
 931 irc_kick(struct userNode *who, struct userNode *target, struct chanNode *channel, const char *msg)
 932 {
 933     const char *numeric;
 934     struct modeNode *mn = GetUserMode(channel, who);
 935     numeric = ((mn && (mn->modes & MODE_CHANOP)) || off_channel) ? who->numeric : self->numeric;
 936     putsock("%s " P10_KICK " %s %s :%s",
 937             numeric, channel->name, target->numeric, msg);
 938 }
 939
 940 void
 941 irc_stats(struct userNode *from, struct server *target, char type)
 942 {
 943     putsock("%s " P10_STATS " %c :%s", from->numeric, type, target->numeric);
 944 }
 945
 946 void
 947 irc_svsnick(struct userNode *from, struct userNode *target, const char *newnick)
 948 {
 949     putsock("%s " P10_SVSNICK " %s %s "FMT_TIME_T, from->uplink->numeric, target->numeric, newnick, now);
 950 }
 951
 952 void
 953 irc_swhois(struct userNode *from, struct userNode *target, const char *message)
 954 {
 955     putsock("%s " P10_SWHOIS " %s %s%s", from->uplink->numeric, target->numeric, message ? ":" : "",
 956                                          message ? message : "");
 957
 958 }
 959
 960 void
 961 irc_part(struct userNode *who, struct chanNode *what, const char *reason)
 962 {
 963     if (reason) {
 964         putsock("%s " P10_PART " %s :%s", who->numeric, what->name, reason);
 965     } else {
 966         putsock("%s " P10_PART " %s", who->numeric, what->name);
 967     }
 968 }
 969
 970 void
 971 irc_topic(struct userNode *service, struct userNode *who, struct chanNode *what, const char *topic)
 972 {
 973
 974    int type = 4;
 975    int host_in_topic = 0;
 976    const char *hstr, *tstr;
 977    char *host, *hostmask;
 978    char shost[MAXLEN];
 979    char sident[MAXLEN];
 980
 981    tstr = conf_get_data("server/type", RECDB_QSTRING);
 982    hstr = conf_get_data("server/host_in_topic", RECDB_QSTRING);
 983    if(tstr)
 984      type = atoi(tstr);
 985    else
 986      type = 4;/* default to 040 style topics */
 987
 988    if (hstr) {
 989       if (IsFakeHost(who))
 990           safestrncpy(shost, who->fakehost, sizeof(shost));
 991       else if (IsSetHost(who)) {
 992           hostmask = strdup(who->sethost);
 993           if ((host = (strrchr(hostmask, '@'))))
 994               *host++ = '\0';
 995           else
 996               host = hostmask;
 997
 998           safestrncpy(sident, hostmask, sizeof(shost));
 999           safestrncpy(shost, host, sizeof(shost));
1000       } else
1001           safestrncpy(shost, who->hostname, sizeof(shost));
1002
1003       host_in_topic = atoi(hstr);
1004    }
1005
1006    if (type == 5) {
1007      putsock("%s " P10_TOPIC " %s %s%s%s%s%s " FMT_TIME_T " " FMT_TIME_T " :%s", service->numeric, what->name,
1008              who->nick, host_in_topic ? "!" : "", host_in_topic ? (IsSetHost(who) ? sident : who->ident) : "",
1009              host_in_topic ? "@" : "", host_in_topic ? shost : "", what->timestamp, now, topic);
1010    } else {
1011      who = service;
1012      putsock("%s " P10_TOPIC " %s :%s", who->numeric, what->name, topic);
1013    }
1014 }
1015
1016 void
1017 irc_raw(const char *what)
1018 {
1019     putsock("%s", what);
1020 }
1021
1022 void
1023 irc_numeric(struct userNode *user, unsigned int num, const char *format, ...)
1024 {
1025     va_list arg_list;
1026     char buffer[MAXLEN];
1027     va_start(arg_list, format);
1028     vsnprintf(buffer, MAXLEN-2, format, arg_list);
1029     buffer[MAXLEN-1] = 0;
1030     putsock(":%s %03d %s %s", self->name, num, user->nick, buffer);
1031 }
1032
1033 static void send_burst(void);
1034
1035 static void
1036 change_nicklen(int new_nicklen)
1037 {
1038     unsigned int nn;
1039     char new_nick[NICKLEN+1];
1040     struct userNode *user;
1041
1042     nicklen = new_nicklen;
1043     /* fix up any users we have here */
1044     for (nn=0; nn<=self->num_mask; nn++) {
1045         if (!(user = self->users[nn]))
1046             continue;
1047         safestrncpy(new_nick, user->nick, sizeof(new_nick));
1048         new_nick[nicklen] = 0;
1049         NickChange(user, new_nick, 1);
1050     }
1051 }
1052
1053 static CMD_FUNC(cmd_whois)
1054 {
1055     struct userNode *from;
1056     struct userNode *who;
1057
1058     if (argc < 3)
1059         return 0;
1060     if (!(from = GetUserH(origin))) {
1061         log_module(MAIN_LOG, LOG_ERROR, "Could not find WHOIS origin user %s", origin);
1062         return 0;
1063     }
1064     if(!(who = GetUserH(argv[2]))) {
1065         irc_numeric(from, ERR_NOSUCHNICK, "%s@%s :No such nick", argv[2], self->name);
1066         return 1;
1067     }
1068     if (IsHiddenHost(who) && !IsOper(from)) {
1069         /* Just stay quiet. */
1070         return 1;
1071     }
1072     irc_numeric(from, RPL_WHOISUSER, "%s %s %s * :%s", who->nick, who->ident, who->hostname, who->info);
1073     if (his_servername && his_servercomment)
1074         irc_numeric(from, RPL_WHOISSERVER, "%s %s :%s", who->nick, his_servername, his_servercomment);
1075     else
1076         irc_numeric(from, RPL_WHOISSERVER, "%s %s :%s", who->nick, who->uplink->name, who->uplink->description);
1077     if (IsOper(who))
1078         irc_numeric(from, RPL_WHOISOPERATOR, "%s :is a megalomaniacal power hungry tyrant", who->nick);
1079     irc_numeric(from, RPL_ENDOFWHOIS, "%s :End of /WHOIS list", who->nick);
1080     return 1;
1081 }
1082
1083 static CMD_FUNC(cmd_server)
1084 {
1085     struct server *srv;
1086     const char *str;
1087
1088     if (argc < 8)
1089         return 0;
1090     if (self->uplink) {
1091         /* another server introduced us */
1092         srv = AddServer(GetServerH(origin), argv[1], atoi(argv[2]), atoi(argv[3]), atoi(argv[4]), argv[6], argv[argc-1]);
1093         if (!srv)
1094             return 0;
1095         srv->self_burst = argv[5][0] == 'J';
1096         srv->burst = 1;
1097     } else {
1098         /* this must be our uplink */
1099         srv = self->uplink = AddServer(self, argv[1], atoi(argv[2]), atoi(argv[3]), atoi(argv[4]), argv[6], argv[argc-1]);
1100         if (!srv)
1101             return 0;
1102         srv->self_burst = argv[5][0] == 'J';
1103         srv->burst = 1;
1104         if ((argv[7][0] == '+') && !force_n2k) {
1105             log_module(MAIN_LOG, LOG_WARNING, "Got Undernet-style SERVER message but \"force_n2k\" not on.");
1106         }
1107         send_burst();
1108     }
1109
1110     /* Fix up our timestamps if necessary. */
1111     if (srv->boot <= PREHISTORY) {
1112         /* Server from the mists of time.. */
1113         if (srv->hops == 1) {
1114             log_module(MAIN_LOG, LOG_ERROR, "Server %s claims to have booted at time "FMT_TIME_T".  This is absurd.", srv->name, srv->boot);
1115         }
1116     } else if ((str = conf_get_data("server/reliable_clock", RECDB_QSTRING))
1117                && enabled_string(str)) {
1118         /* If we have a reliable clock, we just keep our current time. */
1119     } else {
1120         if (srv->boot <= self->boot) {
1121             /* The other server is older than us.  Accept their timestamp.
1122              * Alternately, we are same age, but we accept their time
1123              * since we are linking to them. */
1124             self->boot = srv->boot;
1125             ioset_set_time(srv->link);
1126         }
1127     }
1128     if (srv == self->uplink) {
1129         extern time_t burst_begin;
1130         burst_begin = now;
1131     }
1132     return 1;
1133 }
1134
1135
1136 static CMD_FUNC(cmd_eob)
1137 {
1138     struct server *sender;
1139     dict_iterator_t it;
1140     unsigned int ii;
1141
1142     if (!(sender = GetServerH(origin)))
1143         return 0;
1144     if (sender == self->uplink) {
1145         cManager.uplink->state = CONNECTED;
1146         for (it = dict_first(unbursted_channels); it; it = iter_next(it))
1147             irc_burst(iter_data(it));
1148         dict_delete(unbursted_channels);
1149         unbursted_channels = NULL;
1150         irc_eob();
1151         irc_eob_ack();
1152
1153         /* now that we know who our uplink is,
1154          * we can center the routing map and activate auto-routing.
1155          */
1156         activate_routing(NULL, NULL, NULL);
1157     }
1158     sender->self_burst = 0;
1159     recalc_bursts(sender);
1160     for (ii=0; ii<slf_used; ii++)
1161         slf_list[ii](sender);
1162     /* let auto-routing figure out if we were
1163      * wating on this server to link a child to it */
1164     /* DONT call this if uplink is _US_ */
1165     if(sender->uplink != self)
1166         routing_handle_connect(sender->name, sender->uplink->name);
1167     return 1;
1168 }
1169
1170 static CMD_FUNC(cmd_eob_ack)
1171 {
1172     extern time_t burst_begin;
1173
1174     if (GetServerH(origin) == self->uplink) {
1175         burst_length = now - burst_begin;
1176         self->self_burst = self->burst = 0;
1177     }
1178     cManager.uplink->state = CONNECTED;
1179     return 1;
1180 }
1181
1182 static CMD_FUNC(cmd_ping)
1183 {
1184     struct server *srv;
1185     struct userNode *un;
1186
1187     if (argc > 3)
1188         irc_pong_asll(argv[2], argv[3]);
1189     else if ((srv = GetServerH(origin)))
1190         irc_pong(self->name, srv->numeric);
1191     else if ((un = GetUserH(origin)))
1192         irc_pong(self->name, un->numeric);
1193     else
1194         irc_pong(self->name, origin);
1195
1196     timeq_del(0, timed_send_ping, 0, TIMEQ_IGNORE_WHEN|TIMEQ_IGNORE_DATA);
1197     timeq_del(0, timed_ping_timeout, 0, TIMEQ_IGNORE_WHEN|TIMEQ_IGNORE_DATA);
1198     timeq_add(now + ping_freq, timed_send_ping, 0);
1199     received_ping();
1200     return 1;
1201 }
1202
1203 static CMD_FUNC(cmd_error_nick)
1204 {
1205     /* Go back to original IRC length .. and try to reconnect :/ */
1206     change_nicklen(9);
1207     irc_squit(self, "Got erroneous nickname, truncating nicks.", NULL);
1208     return 1;
1209 }
1210
1211 struct create_desc {
1212     struct userNode *user;
1213     time_t when;
1214 };
1215
1216 static void
1217 join_helper(struct chanNode *chan, void *data)
1218 {
1219     struct create_desc *cd = data;
1220     AddChannelUser(cd->user, chan);
1221 }
1222
1223 static void
1224 create_helper(char *name, void *data)
1225 {
1226     struct create_desc *cd = data;
1227
1228     if (!strcmp(name, "0")) {
1229         while (cd->user->channels.used > 0)
1230             DelChannelUser(cd->user, cd->user->channels.list[0]->channel, 0, 0);
1231         return;
1232     }
1233
1234     AddChannelUser(cd->user, AddChannel(name, cd->when, NULL, NULL, NULL));
1235 }
1236
1237 static CMD_FUNC(cmd_create)
1238 {
1239     struct create_desc cd;
1240     struct userNode *user;
1241
1242     if ((argc < 3) || !(user = GetUserH(origin)))
1243         return 0;
1244     cd.user = user;
1245     cd.when = atoi(argv[2]);
1246     parse_foreach(argv[1], join_helper, create_helper, NULL, NULL, &cd);
1247     return 1;
1248 }
1249
1250 static CMD_FUNC(cmd_join)
1251 {
1252     struct create_desc cd;
1253
1254     if (!(cd.user = GetUserH(origin)))
1255         return 0;
1256     if (argc < 2)
1257         return 0;
1258     else if (argc < 3)
1259         cd.when = now;
1260     else
1261         cd.when = atoi(argv[2]);
1262     parse_foreach(argv[1], join_helper, create_helper, NULL, NULL, &cd);
1263     return 1;
1264 }
1265
1266 static CMD_FUNC(cmd_pong)
1267 {
1268     if (argc < 3)
1269         return 0;
1270     if (!strcmp(argv[2], self->name)) {
1271         timeq_del(0, timed_send_ping, 0, TIMEQ_IGNORE_WHEN|TIMEQ_IGNORE_DATA);
1272         timeq_del(0, timed_ping_timeout, 0, TIMEQ_IGNORE_WHEN|TIMEQ_IGNORE_DATA);
1273         timeq_add(now + ping_freq, timed_send_ping, 0);
1274         received_ping();
1275     }
1276     return 1;
1277 }
1278
1279 static CMD_FUNC(cmd_nick)
1280 {
1281     struct userNode *user;
1282     if ((user = GetUserH(origin))) {
1283         /* nick change (since the source is a user numeric) */
1284         if (argc < 2)
1285             return 0;
1286         NickChange(user, argv[1], 1);
1287     } else {
1288         struct server *serv;
1289         char modes[MAXLEN];
1290         /* new nick */
1291         if (argc < 9)
1292             return 0;
1293         serv = GetServerH(origin);
1294         if (argc > 9)
1295             unsplit_string(argv+6, argc-9, modes);
1296         else
1297             strcpy(modes, "+");
1298         AddUser(serv, argv[1], argv[4], argv[5], modes, argv[argc-2], argv[argc-1], atoi(argv[3]), argv[argc-3]);
1299     }
1300     return 1;
1301 }
1302
1303 static CMD_FUNC(cmd_account)
1304 {
1305     struct userNode *user;
1306     struct server *server;
1307     struct handle_info *hi;
1308
1309     if ((argc < 3) || !origin || !(server = GetServerH(origin)))
1310         return 0; /* Origin must be server. */
1311
1312     /* This next line appears to tremple origin.. why? */
1313     user = GetUserN(argv[1]);
1314     if (!user)
1315         return 1; /* A QUIT probably passed the ACCOUNT. */
1316
1317     if(!extended_accounts) /* any need for this function without? */
1318         return 1;
1319
1320     if(!strcmp(argv[2],"C"))
1321     {
1322         if((hi = loc_auth(argv[4], argv[5])))
1323         {
1324             /* Return a AC A */
1325             putsock("%s " P10_ACCOUNT " %s A %s %lu", self->numeric, server->numeric , argv[3], hi->registered);
1326
1327         }
1328         else
1329         {
1330             /* Return a AC D */
1331             putsock("%s " P10_ACCOUNT " %s D %s", self->numeric, server->numeric , argv[3]);
1332         }
1333         return 1;
1334     }
1335     else if(!strcmp(argv[2],"R"))
1336        call_account_func(user, argv[3]);
1337     else
1338         call_account_func(user, argv[2]); /* For backward compatability */
1339     return 1;
1340 }
1341
1342 static CMD_FUNC(cmd_fakehost)
1343 {
1344     struct userNode *user;
1345
1346     if ((argc < 3) || !origin || !GetServerH(origin))
1347         return 0;
1348     if (!(user = GetUserN(argv[1])))
1349         return 1;
1350     assign_fakehost(user, argv[2], 0);
1351     return 1;
1352 }
1353
1354 static CMD_FUNC(cmd_burst)
1355 {
1356     extern int rel_age;
1357     char modes[MAXLEN], *members = "";
1358     static char exemptlist[MAXLEN], banlist[MAXLEN];
1359     unsigned int next = 3, res = 1;
1360     int ctype = 0, echeck = 0, bcheck = 0;
1361     struct chanNode *cNode;
1362     struct userNode *un;
1363     struct modeNode *mNode;
1364     long mode;
1365     int oplevel = -1;
1366     char *user, *end, sep;
1367     time_t in_timestamp;
1368     char* parm = NULL;
1369
1370     if (argc < 3)
1371         return 0;
1372     modes[0] = 0;
1373
1374     exemptlist[0] = 0;
1375     banlist[0] = 0;
1376
1377     while (next < argc) {
1378         switch (argv[next][0]) {
1379         case '+': {
1380             const char *pos;
1381             int n_modes;
1382             for (pos=argv[next], n_modes = 1; *pos; pos++)
1383                 if ((*pos == 'k') || (*pos == 'l') || (*pos == 'A')
1384                     || (*pos == 'U'))
1385                     n_modes++;
1386             unsplit_string(argv+next, n_modes, modes);
1387             next += n_modes;
1388             break;
1389         }
1390         case '%': {
1391             for(parm = mysep(&argv[next], " "); /* parm = first param */
1392                   parm;   /* While param is not null */
1393                   parm = mysep(&argv[next], " ")  /* parm = next param */
1394                )
1395             {
1396               switch (parm[0]) {
1397                 case '%': {
1398                   ctype = 1;
1399                   break;
1400                 }
1401                 case '~': {
1402                   ctype = 2;
1403                   break;
1404                 }
1405                 default: {
1406                   break;
1407                 }
1408               }
1409               if (ctype == 1) {
1410                 if (bcheck == 0) {
1411                   /* strip % char off start of very first ban */
1412                   if (strlen(parm) > 1) {
1413                     strncat(banlist, strtok(parm, "%"), sizeof(banlist) - 1 - strlen(banlist));
1414                     strncat(banlist, " ", sizeof(banlist) - 1 - strlen(banlist));
1415                   }
1416                   bcheck = 1;
1417                 } else {
1418                   strncat(banlist, parm, sizeof(banlist) - 1 - strlen(banlist));
1419                   strncat(banlist, " ", sizeof(banlist) - 1 - strlen(banlist));
1420                 }
1421               } else if (ctype == 2) {
1422                 if (echeck == 0) {
1423                    echeck = 1;
1424                 } else {
1425                   strncat(exemptlist, parm, sizeof(exemptlist) - 1 - strlen(exemptlist));
1426                   strncat(exemptlist, " ", sizeof(exemptlist) - 1 - strlen(exemptlist));
1427                 }
1428               }
1429             }
1430             next++;
1431             break;
1432         }
1433         default: members = argv[next++]; break;
1434       }
1435     }
1436
1437     in_timestamp = atoi(argv[2]);
1438     if ((cNode = dict_find(unbursted_channels, argv[1], NULL))) {
1439         cNode->timestamp = in_timestamp;
1440         dict_remove(unbursted_channels, cNode->name);
1441         irc_burst(cNode);
1442     }
1443     cNode = AddChannel(argv[1], in_timestamp, modes, banlist, exemptlist);
1444
1445     /* Burst channel members in now. */
1446     for (user = members, sep = *members, mode = 0; sep; user = end) {
1447         for (end = user + 3; isalnum(*end) || *end == '[' || *end == ']'; end++) ;
1448         sep = *end++; end[-1] = 0;
1449         if (sep == ':') {
1450             mode = 0;
1451             while ((sep = *end++)) {
1452                 if (sep == 'o') {
1453                     mode |= MODE_CHANOP;
1454                     oplevel = -1;
1455                 } else if (sep == 'h') {
1456                     mode |= MODE_HALFOP;
1457                     oplevel = -1;
1458                 } else if (sep == 'v') {
1459                     mode |= MODE_VOICE;
1460                     oplevel = -1;
1461                 } else if (isdigit(sep)) {
1462                     mode |= MODE_CHANOP;
1463                     if (oplevel >= 0)
1464                         oplevel += parse_oplevel(end);
1465                     else
1466                         oplevel = parse_oplevel(end);
1467                     while (isdigit(*end)) end++;
1468                 } else
1469                     break;
1470             }
1471             if (rel_age < 0)
1472                 mode = 0;
1473         }
1474         if (!(un = GetUserN(user))) {
1475             res = 0;
1476             continue;
1477         }
1478         if ((mNode = AddChannelUser(un, cNode))) {
1479             mNode->modes = mode;
1480             mNode->oplevel = oplevel;
1481         }
1482     }
1483
1484     return res;
1485 }
1486
1487 static CMD_FUNC(cmd_mode)
1488 {
1489     struct chanNode *cn;
1490     struct userNode *un;
1491     char *sethost; // sethost - reed/apples
1492     int i; // sethost - reed/apples
1493
1494     if (argc < 3)
1495         return 0;
1496     if (!IsChannelName(argv[1])) {
1497         un = GetUserH(argv[1]);
1498         if (!un) {
1499             log_module(MAIN_LOG, LOG_ERROR, "Unable to find user %s whose mode is changing.", argv[1]);
1500             return 0;
1501         }
1502         // sethost - reed/apples
1503         if (argc == 3)
1504         mod_usermode(un, argv[2]);
1505         else {
1506           sethost = malloc(strlen(argv[2]) + 1 + strlen(argv[3]) + 1);
1507           i = 0;
1508           while((sethost[i++] = *argv[2]++));
1509           i--;
1510          sethost[i++] = ' ';
1511           while((sethost[i++] = *argv[3]++));
1512           mod_usermode(un, sethost); // sethost - reed/apples
1513         }
1514
1515         return 1;
1516     }
1517
1518     if (!(cn = GetChannel(argv[1]))) {
1519         log_module(MAIN_LOG, LOG_ERROR, "Unable to find channel %s whose mode is changing.", argv[1]);
1520         return 0;
1521     }
1522     if ((un = GetUserH(origin))) {
1523         struct modeNode *mn;
1524         /* Update idle time for person setting the mode */
1525         if ((mn = GetUserMode(cn, un)))
1526             mn->idle_since = now;
1527     } else {
1528         /* If it came from a server, reset timestamp to re-sync. */
1529         cn->timestamp = atoi(argv[argc-1]);
1530     }
1531
1532     return mod_chanmode(un, cn, argv+2, argc-2, MCP_ALLOW_OVB|MCP_FROM_SERVER|(un ? MC_NOTIFY : 0));
1533 }
1534
1535 static CMD_FUNC(cmd_opmode)
1536 {
1537     struct chanNode *cn;
1538     struct userNode *un;
1539
1540     if (argc < 3)
1541         return 0;
1542
1543     if (!(cn = GetChannel(argv[1]))) {
1544         log_module(MAIN_LOG, LOG_ERROR, "Unable to find channel %s whose mode is changing.", argv[1]);
1545         return 0;
1546     }
1547     if (!(un = GetUserH(origin))) {
1548         log_module(MAIN_LOG, LOG_ERROR, "Unable to find user %s requesting OPMODE.", origin);
1549         return 0;
1550     }
1551     if (!IsOper(un)) {
1552         log_module(MAIN_LOG, LOG_ERROR, "Non-privileged user %s using OPMODE.", un->nick);
1553         return 0;
1554     }
1555
1556     return mod_chanmode(un, cn, argv+2, argc-2, MCP_ALLOW_OVB|MCP_FROM_SERVER); /* do NOT announce opmode locally */
1557 }
1558
1559 static int clear_chanmode(struct chanNode *channel, const char *modes);
1560
1561 static CMD_FUNC(cmd_clearmode)
1562 {
1563     struct chanNode *cn;
1564     struct userNode *un;
1565
1566     if (argc < 3)
1567         return 0;
1568
1569     if (!(cn = GetChannel(argv[1]))) {
1570         log_module(MAIN_LOG, LOG_ERROR, "Unable to find channel %s whose mode is changing.", argv[1]);
1571         return 0;
1572     }
1573     if (!(un = GetUserH(origin))) {
1574         log_module(MAIN_LOG, LOG_ERROR, "Unable to find user %s requesting CLEARMODE.", origin);
1575         return 0;
1576     }
1577     if (!IsOper(un)) {
1578         log_module(MAIN_LOG, LOG_ERROR, "Non-privileged user %s using CLEARMODE.", un->nick);
1579         return 0;
1580     }
1581
1582     return clear_chanmode(cn, argv[2]);
1583 }
1584
1585 static CMD_FUNC(cmd_topic)
1586 {
1587     struct chanNode *cn;
1588     time_t chan_ts, topic_ts;
1589     struct userNode *user;
1590
1591     if (argc < 3)
1592         return 0;
1593     if (!(cn = GetChannel(argv[1]))) {
1594         log_module(MAIN_LOG, LOG_ERROR, "Unable to find channel %s whose topic is being set", argv[1]);
1595         return 0;
1596     }
1597
1598
1599     if (argc == 5) {              /* Asuka / Topic Bursting IRCu's */
1600         user = GetUserH(origin);
1601         chan_ts = atoi(argv[2]);
1602         topic_ts = atoi(argv[3]);
1603     } else if (argc >= 6) {       /* Nefarious 0.5.0 */
1604         user = GetUserH(strtok(argv[2], "!"));
1605         chan_ts = atoi(argv[3]);
1606         topic_ts = atoi(argv[4]);
1607     } else {                      /* Regular IRCu (No Topic Bursting)*/
1608         user = GetUserH(origin);
1609         chan_ts = cn->timestamp;
1610         topic_ts = now;
1611     }
1612
1613     SetChannelTopic(cn, user, user, argv[argc-1], 0);
1614     cn->topic_time = topic_ts;
1615     return 1;
1616 }
1617
1618 static CMD_FUNC(cmd_num_topic)
1619 {
1620     struct chanNode *cn;
1621
1622     if (!argv[0])
1623         return 0; /* huh? */
1624     if (argv[2]) {
1625         cn = GetChannel(argv[2]);
1626         if (!cn) {
1627             log_module(MAIN_LOG, LOG_ERROR, "Unable to find channel %s in topic reply", argv[2]);
1628             return 0;
1629         }
1630     } else
1631         return 0;
1632
1633     switch (atoi(argv[0])) {
1634     case 331:
1635         cn->topic_time = 0;
1636         break;  /* no topic */
1637     case 332:
1638         if (argc < 4)
1639             return 0;
1640         safestrncpy(cn->topic, unsplit_string(argv+3, argc-3, NULL), sizeof(cn->topic));
1641         break;
1642     case 333:
1643         if (argc < 5)
1644             return 0;
1645         safestrncpy(cn->topic_nick, argv[3], sizeof(cn->topic_nick));
1646         cn->topic_time = atoi(argv[4]);
1647         break;
1648     default:
1649         return 0; /* should never happen */
1650     }
1651     return 1;
1652 }
1653
1654 static CMD_FUNC(cmd_num_gline)
1655 {
1656     if (argc < 6)
1657         return 0;
1658     gline_add(origin, argv[3], atoi(argv[4])-now, argv[5], now, 0, 0);
1659     return 1;
1660 }
1661
1662 static CMD_FUNC(cmd_num_shun)
1663 {
1664     if (argc < 6)
1665         return 0;
1666     shun_add(origin, argv[3], atoi(argv[4])-now, argv[5], now, 0);
1667     return 1;
1668 }
1669
1670 static CMD_FUNC(cmd_quit)
1671 {
1672     struct userNode *user;
1673     if (argc < 2)
1674         return 0;
1675     /* Sometimes we get a KILL then a QUIT or the like, so we don't want to
1676      * call DelUser unless we have the user in our grasp. */
1677     if ((user = GetUserH(origin)))
1678         DelUser(user, NULL, false, argv[1]);
1679     return 1;
1680 }
1681
1682 static CMD_FUNC(cmd_kill)
1683 {
1684     struct userNode *user;
1685     if (argc < 2)
1686         return 0;
1687     user = GetUserN(argv[1]);
1688     if (!user) {
1689         /* If we get a KILL for a non-existent user, it could be a
1690          * Ghost response to a KILL we sent out earlier.  So we only
1691          * whine if the target is local.
1692          */
1693         if (!strncmp(argv[1], self->numeric, strlen(self->numeric)))
1694             log_module(MAIN_LOG, LOG_ERROR, "Unable to find kill victim %s", argv[1]);
1695         return 0;
1696     }
1697
1698     if (IsLocal(user) && IsService(user)) {
1699         /* TODO: rate limit this so silly things don't happen. */
1700         ReintroduceUser(user);
1701         return 1;
1702     }
1703
1704     DelUser(user, NULL, false, argv[2]);
1705     return 1;
1706 }
1707
1708 static CMD_FUNC(cmd_part)
1709 {
1710     struct userNode *user;
1711
1712     if (argc < 2)
1713         return 0;
1714     user = GetUserH(origin);
1715     if (!user)
1716         return 0;
1717     parse_foreach(argv[1], part_helper, NULL, NULL, NULL, user);
1718     return 1;
1719 }
1720
1721 static CMD_FUNC(cmd_silence)
1722 {
1723     struct userNode *user;
1724     char *mask;
1725     char *new_mask;
1726     unsigned int i;
1727
1728     if (argc < 2)
1729         return 0;
1730
1731     user = GetUserN(argv[1]);
1732
1733     /* Sanity, go nuts if this happens */
1734     if (!user)
1735         return 0;
1736
1737     /*  We can safely ignore this if a user adding a silence is not
1738      *  ignored. However this brings up a TODO. If a user logs in and
1739      *  they have silences on the IRCd then we need to set them here
1740      *  somehow
1741      */
1742     if (!user->handle_info)
1743         return 1;
1744
1745     mask = argv[2];
1746
1747     if (*mask == '-') {
1748         for (i=0; i<user->handle_info->ignores->used; i++) {
1749             if (!irccasecmp(mask+1, user->handle_info->ignores->list[i]))
1750                 user->handle_info->ignores->list[i] = user->handle_info->ignores->list[--user->handle_info->ignores->used];
1751         }
1752     } else {
1753         for (i=0; i<user->handle_info->ignores->used; i++) {
1754             if (!strcmp(mask+1, user->handle_info->ignores->list[i]))
1755                 return 1; /* Already on the users NickServ ignore list, safely ignore */
1756         }
1757
1758         new_mask = strdup(mask+1);
1759         string_list_append(user->handle_info->ignores, new_mask);
1760     }
1761     return 1;
1762 }
1763
1764 static CMD_FUNC(cmd_kick)
1765 {
1766     if (argc < 3)
1767         return 0;
1768     ChannelUserKicked(GetUserH(origin), GetUserN(argv[2]), GetChannel(argv[1]));
1769     return 1;
1770 }
1771
1772 static CMD_FUNC(cmd_squit)
1773 {
1774     struct server *server;
1775     char *uplink;
1776
1777     if (argc < 4)
1778         return 0;
1779     if (!(server = GetServerH(argv[1])))
1780         return 0;
1781
1782     if (server == self->uplink) {
1783         /* Force a reconnect to the currently selected server. */
1784         cManager.uplink->tries = 0;
1785         log_module(MAIN_LOG, LOG_INFO, "Squitting from uplink: %s", argv[3]);
1786         close_socket();
1787         return 1;
1788     }
1789
1790     uplink = strdup(server->uplink->name);
1791     DelServer(server, 0, argv[3]);
1792     /* if its a pingout and pingout connecting is enabled
1793                or its a read error and readerror connecting is enabled
1794                or were doing a "N" and i need to connect that server somewhere */
1795     routing_handle_squit(argv[1], uplink, argv[3]);
1796     free(uplink);
1797     return 1;
1798 }
1799
1800 static CMD_FUNC(cmd_privmsg)
1801 {
1802     struct privmsg_desc pd;
1803     if (argc != 3)
1804         return 0;
1805     pd.user = GetUserH(origin);
1806     if (!pd.user || (IsGagged(pd.user) && !IsOper(pd.user)))
1807         return 1;
1808     pd.is_notice = 0;
1809     pd.text = argv[2];
1810     parse_foreach(argv[1], privmsg_chan_helper, NULL, privmsg_user_helper, privmsg_invalid, &pd);
1811     return 1;
1812 }
1813
1814 static CMD_FUNC(cmd_notice)
1815 {
1816     struct privmsg_desc pd;
1817     struct server *srv;
1818     int nuser = 0;
1819
1820     if (argc != 3)
1821         return 0;
1822
1823     pd.user = GetUserH(origin);
1824     if(!pd.user)
1825         nuser = 1;
1826     if (!pd.user || (IsGagged(pd.user) && !IsOper(pd.user))) {
1827     }
1828     else {
1829         pd.is_notice = 1;
1830         pd.text = argv[2];
1831         parse_foreach(argv[1], privmsg_chan_helper, NULL, privmsg_user_helper, privmsg_invalid, &pd);
1832     }
1833
1834     srv = GetServerH(origin);
1835     if(srv) {
1836         char *sargv[MAXNUMPARAMS];
1837         int sargc;
1838
1839         sargc = split_line(argv[2], true, MAXNUMPARAMS, sargv);
1840
1841         if(!strcasecmp(sargv[0], "Connect:")) {
1842             /* :Connect: Host shoe.loxxin.net not listed in ircd.conf */
1843             if(!strcasecmp(sargv[3], "not") && !strcasecmp(sargv[4], "listed")) {
1844                 routing_handle_connect_failure(srv, sargv[2], unsplit_string(sargv+3, sargc-3, NULL));
1845             }
1846         }
1847         else if(!strcasecmp(sargv[0], "Link")) {
1848             /* :Link with mephisto.etheria.cx cancelled: Server mephisto.etheria.cx[216.46.33.71]
1849              *
1850              * :Link with laptop.afternet.org cancelled: Connection refused
1851              */
1852             if(!strcasecmp(sargv[3], "cancelled:")) {
1853                 routing_handle_connect_failure(srv, sargv[2], unsplit_string(sargv+4, sargc-4, NULL));
1854             }
1855         }
1856     }
1857     return 1;
1858 }
1859
1860 static CMD_FUNC(cmd_away)
1861 {
1862     struct userNode *uNode;
1863
1864     uNode = GetUserH(origin);
1865     if (!uNode)
1866         return 1;
1867     if (argc < 2)
1868         uNode->modes &= ~FLAGS_AWAY;
1869     else
1870         uNode->modes |= FLAGS_AWAY;
1871     return 1;
1872 }
1873
1874 static CMD_FUNC(cmd_gline)
1875 {
1876     if (argc < 3)
1877         return 0;
1878     if (argv[2][0] == '+') {
1879         if (argc < 5)
1880             return 0;
1881         gline_add(origin, argv[2]+1, strtoul(argv[3], NULL, 0), argv[argc-1], now, 0, 0);
1882         return 1;
1883     } else if (argv[2][0] == '-') {
1884         gline_remove(argv[2]+1, 0);
1885         return 1;
1886     } else
1887         return 0;
1888 }
1889
1890 static CMD_FUNC(cmd_shun)
1891 {
1892     if (argc < 3)
1893         return 0;
1894     if (argv[2][0] == '+') {
1895         if (argc < 5)
1896             return 0;
1897         shun_add(origin, argv[2]+1, strtoul(argv[3], NULL, 0), argv[argc-1], now, 0);
1898         return 1;
1899     } else if (argv[2][0] == '-') {
1900         shun_remove(argv[2]+1, 0);
1901         return 1;
1902     } else
1903         return 0;
1904 }
1905
1906 static CMD_FUNC(cmd_svsnick)
1907 {
1908     struct userNode *target, *dest;
1909     if ((argc < 4)
1910         || !(target = GetUserN(argv[1]))
1911         || !IsLocal(target)
1912         || (dest = GetUserH(argv[2])))
1913         return 0;
1914     NickChange(target, argv[2], 0);
1915     return 1;
1916 }
1917
1918 static oper_func_t *of_list;
1919 static unsigned int of_size = 0, of_used = 0;
1920
1921 void
1922 free_user(struct userNode *user)
1923 {
1924     free(user->nick);
1925     free(user);
1926 }
1927
1928 static void
1929 parse_cleanup(void)
1930 {
1931     unsigned int nn;
1932     free(of_list);
1933     free(privmsg_funcs);
1934     free(notice_funcs);
1935     free(mcf_list);
1936     dict_delete(irc_func_dict);
1937     for (nn=0; nn<dead_users.used; nn++)
1938         free_user(dead_users.list[nn]);
1939     userList_clean(&dead_users);
1940 }
1941
1942 static void
1943 p10_conf_reload(void) {
1944     hidden_host_suffix = conf_get_data("server/hidden_host", RECDB_QSTRING);
1945 }
1946
1947 static void
1948 remove_unbursted_channel(struct chanNode *cNode) {
1949     if (unbursted_channels)
1950         dict_remove(unbursted_channels, cNode->name);
1951 }
1952
1953 void
1954 init_parse(void)
1955 {
1956     const char *str, *desc;
1957     int numnick, usermask, max_users;
1958     char numer[COMBO_NUMERIC_LEN+1];
1959
1960     /* read config items */
1961     str = conf_get_data("server/extended_accounts", RECDB_QSTRING);
1962     extended_accounts = str ? enabled_string(str) : 1;
1963     str = conf_get_data("server/ping_freq", RECDB_QSTRING);
1964     ping_freq = str ? ParseInterval(str) : 120;
1965     str = conf_get_data("server/ping_timeout", RECDB_QSTRING);
1966     ping_timeout = str ? ParseInterval(str) : 30;
1967     str = conf_get_data("server/force_n2k", RECDB_QSTRING);
1968     force_n2k = str ? enabled_string(str) : 1;
1969     str = conf_get_data("server/numeric", RECDB_QSTRING);
1970     if (!str) {
1971         log_module(MAIN_LOG, LOG_ERROR, "No server/numeric entry in config file.");
1972         exit(1);
1973     }
1974     numnick = atoi(str);
1975     str = conf_get_data("server/max_users", RECDB_QSTRING);
1976     max_users = str ? atoi(str) : 4096;
1977     for (usermask = 4; usermask < max_users; usermask <<= 1) ;
1978     usermask--;
1979     if ((numnick < 64) && (usermask < 4096) && !force_n2k)
1980         inttobase64(numer, (numnick << 12) + (usermask & 0x00fff), 3);
1981     else
1982         inttobase64(numer, (numnick << 18) + (usermask & 0x3ffff), 5);
1983
1984     str = conf_get_data("server/his_servername", RECDB_QSTRING);
1985     his_servername = str ? strdup(str) : NULL;
1986     str = conf_get_data("server/his_servercomment", RECDB_QSTRING);
1987     his_servercomment = str ? strdup(str) : NULL;
1988
1989     str = conf_get_data("server/hostname", RECDB_QSTRING);
1990     desc = conf_get_data("server/description", RECDB_QSTRING);
1991     if (!str || !desc) {
1992         log_module(MAIN_LOG, LOG_ERROR, "No server/hostname entry in config file.");
1993         exit(1);
1994     }
1995     self = AddServer(NULL, str, 0, boot_time, now, numer, desc);
1996     conf_register_reload(p10_conf_reload);
1997
1998     irc_func_dict = dict_new();
1999     dict_insert(irc_func_dict, CMD_BURST, cmd_burst);
2000     dict_insert(irc_func_dict, TOK_BURST, cmd_burst);
2001     dict_insert(irc_func_dict, CMD_CREATE, cmd_create);
2002     dict_insert(irc_func_dict, TOK_CREATE, cmd_create);
2003     dict_insert(irc_func_dict, CMD_EOB, cmd_eob);
2004     dict_insert(irc_func_dict, TOK_EOB, cmd_eob);
2005     dict_insert(irc_func_dict, CMD_EOB_ACK, cmd_eob_ack);
2006     dict_insert(irc_func_dict, TOK_EOB_ACK, cmd_eob_ack);
2007     dict_insert(irc_func_dict, CMD_MODE, cmd_mode);
2008     dict_insert(irc_func_dict, TOK_MODE, cmd_mode);
2009     dict_insert(irc_func_dict, CMD_NICK, cmd_nick);
2010     dict_insert(irc_func_dict, TOK_NICK, cmd_nick);
2011     dict_insert(irc_func_dict, CMD_ACCOUNT, cmd_account);
2012     dict_insert(irc_func_dict, TOK_ACCOUNT, cmd_account);
2013     dict_insert(irc_func_dict, CMD_FAKEHOST, cmd_fakehost);
2014     dict_insert(irc_func_dict, TOK_FAKEHOST, cmd_fakehost);
2015     dict_insert(irc_func_dict, CMD_PASS, cmd_pass);
2016     dict_insert(irc_func_dict, TOK_PASS, cmd_pass);
2017     dict_insert(irc_func_dict, CMD_PING, cmd_ping);
2018     dict_insert(irc_func_dict, TOK_PING, cmd_ping);
2019     dict_insert(irc_func_dict, CMD_PRIVMSG, cmd_privmsg);
2020     dict_insert(irc_func_dict, TOK_PRIVMSG, cmd_privmsg);
2021     dict_insert(irc_func_dict, CMD_PONG, cmd_pong);
2022     dict_insert(irc_func_dict, TOK_PONG, cmd_pong);
2023     dict_insert(irc_func_dict, CMD_QUIT, cmd_quit);
2024     dict_insert(irc_func_dict, TOK_QUIT, cmd_quit);
2025     dict_insert(irc_func_dict, CMD_SERVER, cmd_server);
2026     dict_insert(irc_func_dict, TOK_SERVER, cmd_server);
2027     dict_insert(irc_func_dict, CMD_JOIN, cmd_join);
2028     dict_insert(irc_func_dict, TOK_JOIN, cmd_join);
2029     dict_insert(irc_func_dict, CMD_PART, cmd_part);
2030     dict_insert(irc_func_dict, TOK_PART, cmd_part);
2031     dict_insert(irc_func_dict, CMD_ERROR, cmd_error);
2032     dict_insert(irc_func_dict, TOK_ERROR, cmd_error);
2033     dict_insert(irc_func_dict, CMD_TOPIC, cmd_topic);
2034     dict_insert(irc_func_dict, TOK_TOPIC, cmd_topic);
2035     dict_insert(irc_func_dict, CMD_AWAY, cmd_away);
2036     dict_insert(irc_func_dict, TOK_AWAY, cmd_away);
2037     dict_insert(irc_func_dict, CMD_SILENCE, cmd_silence);
2038     dict_insert(irc_func_dict, TOK_SILENCE, cmd_silence);
2039     dict_insert(irc_func_dict, CMD_KICK, cmd_kick);
2040     dict_insert(irc_func_dict, TOK_KICK, cmd_kick);
2041     dict_insert(irc_func_dict, CMD_SQUIT, cmd_squit);
2042     dict_insert(irc_func_dict, TOK_SQUIT, cmd_squit);
2043     dict_insert(irc_func_dict, CMD_KILL, cmd_kill);
2044     dict_insert(irc_func_dict, TOK_KILL, cmd_kill);
2045     dict_insert(irc_func_dict, CMD_NOTICE, cmd_notice);
2046     dict_insert(irc_func_dict, TOK_NOTICE, cmd_notice);
2047     dict_insert(irc_func_dict, CMD_STATS, cmd_stats);
2048     dict_insert(irc_func_dict, TOK_STATS, cmd_stats);
2049     dict_insert(irc_func_dict, CMD_SVSNICK, cmd_svsnick);
2050     dict_insert(irc_func_dict, TOK_SVSNICK, cmd_svsnick);
2051     dict_insert(irc_func_dict, CMD_SWHOIS, cmd_dummy);
2052     dict_insert(irc_func_dict, TOK_SWHOIS, cmd_dummy);
2053     dict_insert(irc_func_dict, CMD_WHOIS, cmd_whois);
2054     dict_insert(irc_func_dict, TOK_WHOIS, cmd_whois);
2055     dict_insert(irc_func_dict, CMD_GLINE, cmd_gline);
2056     dict_insert(irc_func_dict, TOK_GLINE, cmd_gline);
2057     dict_insert(irc_func_dict, CMD_SHUN, cmd_shun);
2058     dict_insert(irc_func_dict, TOK_SHUN, cmd_shun);
2059     dict_insert(irc_func_dict, CMD_OPMODE, cmd_opmode);
2060     dict_insert(irc_func_dict, TOK_OPMODE, cmd_opmode);
2061     dict_insert(irc_func_dict, CMD_CLEARMODE, cmd_clearmode);
2062     dict_insert(irc_func_dict, TOK_CLEARMODE, cmd_clearmode);
2063     dict_insert(irc_func_dict, CMD_VERSION, cmd_version);
2064     dict_insert(irc_func_dict, TOK_VERSION, cmd_version);
2065     dict_insert(irc_func_dict, CMD_ADMIN, cmd_admin);
2066     dict_insert(irc_func_dict, TOK_ADMIN, cmd_admin);
2067
2068     /* In P10, DESTRUCT doesn't do anything except be broadcast to servers.
2069      * Apparently to obliterate channels from any servers that think they
2070      * exist?
2071      */
2072     dict_insert(irc_func_dict, CMD_DESTRUCT, cmd_dummy);
2073     dict_insert(irc_func_dict, TOK_DESTRUCT, cmd_dummy);
2074     /* Ignore invites */
2075     dict_insert(irc_func_dict, CMD_INVITE, cmd_dummy);
2076     dict_insert(irc_func_dict, TOK_INVITE, cmd_dummy);
2077     /* DESYNCH is just informational, so ignore it */
2078     dict_insert(irc_func_dict, CMD_DESYNCH, cmd_dummy);
2079     dict_insert(irc_func_dict, TOK_DESYNCH, cmd_dummy);
2080     /* Ignore channel operator notices. */
2081     dict_insert(irc_func_dict, CMD_WALLCHOPS, cmd_dummy);
2082     dict_insert(irc_func_dict, TOK_WALLCHOPS, cmd_dummy);
2083     dict_insert(irc_func_dict, CMD_WALLVOICES, cmd_dummy);
2084     dict_insert(irc_func_dict, TOK_WALLVOICES, cmd_dummy);
2085     dict_insert(irc_func_dict, CMD_WALLHOPS, cmd_dummy);
2086     dict_insert(irc_func_dict, TOK_WALLHOPS, cmd_dummy);
2087     /* Ignore opers being silly. */
2088     dict_insert(irc_func_dict, CMD_WALLOPS, cmd_dummy);
2089     dict_insert(irc_func_dict, TOK_WALLOPS, cmd_dummy);
2090     dict_insert(irc_func_dict, CMD_WALLHOPS, cmd_dummy);
2091     dict_insert(irc_func_dict, TOK_WALLHOPS, cmd_dummy);
2092     dict_insert(irc_func_dict, TOK_WALLUSERS, cmd_dummy);
2093     /* Ignore dnsbl exemptions */
2094     dict_insert(irc_func_dict, TOK_EXEMPT, cmd_dummy);
2095     dict_insert(irc_func_dict, TOK_MARK, cmd_dummy);
2096     /* Ignore privs */
2097     dict_insert(irc_func_dict, TOK_PRIVS, cmd_dummy);
2098     /* Ignore remote luser */
2099     dict_insert(irc_func_dict, TOK_LUSERS, cmd_dummy);
2100     /* We have reliable clock!  Always!  Wraaa! */
2101     dict_insert(irc_func_dict, CMD_SETTIME, cmd_dummy);
2102     dict_insert(irc_func_dict, TOK_SETTIME, cmd_dummy);
2103
2104     /* ignore /trace and /motd commands targetted at us */
2105     dict_insert(irc_func_dict, TOK_TRACE, cmd_dummy);
2106     dict_insert(irc_func_dict, TOK_MOTD, cmd_dummy);
2107
2108     /* handle topics */
2109     dict_insert(irc_func_dict, "331", cmd_num_topic);
2110     dict_insert(irc_func_dict, "332", cmd_num_topic);
2111     dict_insert(irc_func_dict, "333", cmd_num_topic);
2112     dict_insert(irc_func_dict, "345", cmd_dummy); /* blah has been invited to blah */
2113     dict_insert(irc_func_dict, "432", cmd_error_nick); /* Erroneus [sic] nickname */
2114     /* ban list resetting */
2115     /* "stats g" responses */
2116     dict_insert(irc_func_dict, "247", cmd_num_gline);
2117     dict_insert(irc_func_dict, "542", cmd_num_shun);
2118     dict_insert(irc_func_dict, "219", cmd_dummy); /* "End of /STATS report" */
2119     /* other numeric responses we might get */
2120     dict_insert(irc_func_dict, "401", cmd_dummy); /* target left network */
2121     dict_insert(irc_func_dict, "403", cmd_dummy); /* no such channel */
2122     dict_insert(irc_func_dict, "404", cmd_dummy); /* cannot send to channel */
2123     dict_insert(irc_func_dict, "439", cmd_dummy); /* target change too fast */
2124     dict_insert(irc_func_dict, "441", cmd_dummy); /* target isn't on that channel */
2125     dict_insert(irc_func_dict, "442", cmd_dummy); /* you aren't on that channel */
2126     dict_insert(irc_func_dict, "443", cmd_dummy); /* is already on channel (after invite?) */
2127     dict_insert(irc_func_dict, "461", cmd_dummy); /* Not enough parameters (after TOPIC w/ 0 args) */
2128     dict_insert(irc_func_dict, "467", cmd_dummy); /* Channel key already set */
2129
2130     num_privmsg_funcs = 16;
2131     privmsg_funcs = malloc(sizeof(privmsg_func_t)*num_privmsg_funcs);
2132     memset(privmsg_funcs, 0, sizeof(privmsg_func_t)*num_privmsg_funcs);
2133
2134     num_notice_funcs = 16;
2135     notice_funcs = malloc(sizeof(privmsg_func_t)*num_notice_funcs);
2136     memset(notice_funcs, 0, sizeof(privmsg_func_t)*num_notice_funcs);
2137
2138     userList_init(&dead_users);
2139     reg_del_channel_func(remove_unbursted_channel);
2140     reg_exit_func(parse_cleanup);
2141 }
2142
2143 int
2144 parse_line(char *line, int recursive)
2145 {
2146     char *argv[MAXNUMPARAMS], *origin;
2147     int argc, cmd, res=0;
2148     cmd_func_t *func;
2149
2150     argc = split_line(line, true, MAXNUMPARAMS, argv);
2151     cmd = self->uplink || !argv[0][1] || !argv[0][2];
2152     if (argc > cmd) {
2153         if (cmd) {
2154             if (argv[0][0] == ':') {
2155                 origin = argv[0]+1;
2156             } else if (!argv[0][1] || !argv[0][2]) {
2157                 struct server *sNode = GetServerN(argv[0]);
2158                 origin = sNode ? sNode->name : 0;
2159             } else {
2160                 struct userNode *uNode = GetUserN(argv[0]);
2161                 origin = uNode ? uNode->nick : 0;
2162             }
2163         } else
2164             origin = 0;
2165         if ((func = dict_find(irc_func_dict, argv[cmd], NULL)))
2166             res = func(origin, argc-cmd, argv+cmd);
2167     }
2168     if (!res) {
2169         log_module(MAIN_LOG, LOG_ERROR, "PARSE ERROR on line: %s", unsplit_string(argv, argc, NULL));
2170     } else if (!recursive) {
2171         unsigned int i;
2172         for (i=0; i<dead_users.used; i++)
2173             free_user(dead_users.list[i]);
2174         dead_users.used = 0;
2175     }
2176     return res;
2177 }
2178
2179 static void
2180 parse_foreach(char *target_list, foreach_chanfunc cf, foreach_nonchan nc, foreach_userfunc uf, foreach_nonuser nu, void *data)
2181 {
2182     char *j, old;
2183
2184     do {
2185         j = target_list;
2186         while (*j != 0 && *j != ',')
2187             j++;
2188         old = *j;
2189         *j = 0;
2190
2191         if (IsChannelName(target_list)
2192             || (target_list[0] == '0' && target_list[1] == '\0')) {
2193             struct chanNode *chan = GetChannel(target_list);
2194
2195             if (chan) {
2196                 if (cf)
2197                     cf(chan, data);
2198             } else {
2199                 if (nc)
2200                     nc(target_list, data);
2201             }
2202         } else {
2203             struct userNode *user;
2204             struct privmsg_desc *pd = data;
2205
2206             pd->is_qualified = 0;
2207             if (*target_list == '@') {
2208                 user = NULL;
2209             } else if (strchr(target_list, '@')) {
2210                 struct server *server;
2211
2212                 pd->is_qualified = 1;
2213                 user = GetUserH(strtok(target_list, "@"));
2214                 server = GetServerH(strtok(NULL, "@"));
2215
2216                 if (user && (user->uplink != server)) {
2217                     /* Don't attempt to index into any arrays
2218                        using a user's numeric on another server. */
2219                     user = NULL;
2220                 }
2221             } else {
2222                 user = GetUserN(target_list);
2223             }
2224
2225             if (user) {
2226                 if (uf)
2227                     uf(user, data);
2228             } else {
2229                 if (nu)
2230                     nu(target_list, data);
2231             }
2232         }
2233         target_list = j+1;
2234     } while (old == ',');
2235 }
2236
2237 static int
2238 get_local_numeric(void)
2239 {
2240     static unsigned int next_numeric = 0;
2241     if (self->clients > self->num_mask)
2242         return -1;
2243     while (self->users[next_numeric])
2244         if (++next_numeric > self->num_mask)
2245             next_numeric = 0;
2246     return next_numeric;
2247 }
2248
2249 static void
2250 make_numeric(struct server *svr, int local_num, char *outbuf)
2251 {
2252     int slen, llen;
2253
2254     if (force_n2k || svr->numeric[1]) {
2255         slen = 2;
2256         llen = 3;
2257     } else {
2258         slen = 1;
2259         llen = (local_num < 64*64) ? 2 : 3;
2260     }
2261     strncpy(outbuf, svr->numeric, slen);
2262     inttobase64(outbuf+slen, local_num, llen);
2263     outbuf[slen+llen] = 0;
2264 }
2265
2266 struct server *
2267 AddServer(struct server *uplink, const char *name, int hops, time_t boot, time_t link, const char *numeric, const char *description)
2268 {
2269     struct server* sNode;
2270     int slen, mlen;
2271
2272     if ((sNode = GetServerN(numeric))) {
2273         /* This means we're trying to re-add an existant server.
2274          * To be safe, we should forget the previous incarnation.
2275          * (And all its linked servers.)
2276          *
2277          * It usually only happens in replays when the original
2278          * had a ping timeout and the replay didn't (because
2279          * replaying a ping timeout invariably gets things wrong).
2280          */
2281         DelServer(sNode, 0, NULL);
2282     }
2283
2284     switch (strlen(numeric)) {
2285     case 5: slen = 2; mlen = 3; break;
2286     case 4: slen = 1; mlen = 3; break;
2287     case 3: slen = 1; mlen = 2; break;
2288     default:
2289         log_module(MAIN_LOG, LOG_ERROR, "AddServer(\"%s\", \"%s\", ...): Numeric %s has invalid length.", uplink->name, name, numeric);
2290         return NULL;
2291     }
2292
2293     sNode = calloc(1, sizeof(*sNode));
2294     sNode->uplink = uplink;
2295     safestrncpy(sNode->name, name, sizeof(sNode->name));
2296     sNode->num_mask = base64toint(numeric+slen, mlen);
2297     sNode->hops = hops;
2298     sNode->boot = boot;
2299     sNode->link = link;
2300     strncpy(sNode->numeric, numeric, slen);
2301     safestrncpy(sNode->description, description, sizeof(sNode->description));
2302     sNode->users = calloc(sNode->num_mask+1, sizeof(*sNode->users));
2303     serverList_init(&sNode->children);
2304     if (sNode->uplink) {
2305         /* uplink may be NULL if we're just building ourself */
2306         serverList_append(&sNode->uplink->children, sNode);
2307     }
2308     servers_num[base64toint(numeric, slen)] = sNode;
2309     dict_insert(servers, sNode->name, sNode);
2310     return sNode;
2311 }
2312
2313 void DelServer(struct server* serv, int announce, const char *message)
2314 {
2315     unsigned int i;
2316
2317     /* If we receive an ERROR command before the SERVER
2318      * command a NULL server can be passed */
2319     if (!serv)
2320         return;
2321
2322     /* Hrm, what's the right way to SQUIT some other server?
2323      * (This code is only to handle killing juped servers.) */
2324     if (announce && (serv->uplink == self) && (serv != self->uplink))
2325         irc_squit(serv, message, NULL);
2326
2327     /* must recursively remove servers linked to this one first */
2328     for (i=serv->children.used;i>0;)
2329         if (serv->children.list[--i] != self)
2330             DelServer(serv->children.list[i], false, NULL);
2331
2332     /* clean up server's user hash tables */
2333     for (i=0;i<=serv->num_mask;i++)
2334         if (serv->users[i])
2335             DelUser(serv->users[i], NULL, false, "server delinked");
2336
2337     /* delete server */
2338     if (serv->uplink)
2339         serverList_remove(&serv->uplink->children, serv);
2340     if (serv == self->uplink)
2341         self->uplink = NULL;
2342     servers_num[base64toint(serv->numeric, strlen(serv->numeric))] = NULL;
2343     dict_remove(servers, serv->name);
2344     serverList_clean(&serv->children);
2345     free(serv->users);
2346     free(serv);
2347 }
2348
2349 struct userNode *
2350 AddService(const char *nick, const char *modes, const char *desc, const char *hostname)
2351 {
2352     char numeric[COMBO_NUMERIC_LEN+1];
2353     int local_num = get_local_numeric();
2354     time_t timestamp = now;
2355     struct userNode *old_user = GetUserH(nick);
2356
2357     if (old_user) {
2358         if (IsLocal(old_user))
2359             return old_user;
2360         timestamp = old_user->timestamp - 1;
2361     }
2362     if (local_num == -1) {
2363         log_module(MAIN_LOG, LOG_ERROR, "Unable to allocate numnick for service %s", nick);
2364         return 0;
2365     }
2366     if (!hostname)
2367         hostname = self->name;
2368     make_numeric(self, local_num, numeric);
2369     /* TODO: Make these modes part of the conf file */
2370     return AddUser(self, nick, nick, hostname, modes ? modes : "+oik", numeric, desc, now, "AAAAAA");
2371 }
2372
2373 struct userNode *
2374 AddClone(const char *nick, const char *ident, const char *hostname, const char *desc)
2375 {
2376     char numeric[COMBO_NUMERIC_LEN+1];
2377     int local_num = get_local_numeric();
2378     time_t timestamp = now;
2379     struct userNode *old_user = GetUserH(nick);
2380
2381     if (old_user) {
2382         if (IsLocal(old_user))
2383             return old_user;
2384         timestamp = old_user->timestamp - 1;
2385     }
2386     if (local_num == -1) {
2387         log_module(MAIN_LOG, LOG_ERROR, "Unable to allocate numnick for clone %s", nick);
2388         return 0;
2389     }
2390     make_numeric(self, local_num, numeric);
2391     return AddUser(self, nick, ident, hostname, "+i", numeric, desc, timestamp, "AAAAAA");
2392 }
2393
2394 int
2395 is_valid_nick(const char *nick) {
2396     unsigned int ii;
2397     /* IRC has some of The Most Fucked-Up ideas about character sets
2398      * in the world.. */
2399     if (!isalpha(*nick) && !strchr("{|}~[\\]^_`", *nick))
2400         return 0;
2401     for (ii = 0; nick[ii]; ++ii)
2402         if (!isalnum(nick[ii]) && !strchr("{|}~[\\]^-_`", nick[ii]))
2403             return 0;
2404     if (strlen(nick) > nicklen)
2405         return 0;
2406     return 1;
2407 }
2408
2409 static struct userNode*
2410 AddUser(struct server* uplink, const char *nick, const char *ident, const char *hostname, const char *modes, const char *numeric, const char *userinfo, time_t timestamp, const char *realip)
2411 {
2412     struct userNode *oldUser, *uNode;
2413     unsigned int n, ignore_user;
2414
2415     if ((strlen(numeric) < 3) || (strlen(numeric) > 5)) {
2416         log_module(MAIN_LOG, LOG_WARNING, "AddUser(%p, %s, ...): numeric %s wrong length!", uplink, nick, numeric);
2417         return NULL;
2418     }
2419
2420     if (!uplink) {
2421         log_module(MAIN_LOG, LOG_WARNING, "AddUser(%p, %s, ...): server for numeric %s doesn't exist!", uplink, nick, numeric);
2422         return NULL;
2423     }
2424
2425     if (uplink != GetServerN(numeric)) {
2426         log_module(MAIN_LOG, LOG_WARNING, "AddUser(%p, %s, ...): server for numeric %s differs from nominal uplink %s.", uplink, nick, numeric, uplink->name);
2427         return NULL;
2428     }
2429
2430     if (!is_valid_nick(nick)) {
2431         log_module(MAIN_LOG, LOG_WARNING, "AddUser(%p, %s, ...): invalid nickname detected.", uplink, nick);
2432         return NULL;
2433     }
2434
2435     ignore_user = 0;
2436     if ((oldUser = GetUserH(nick))) {
2437         if (IsLocal(oldUser) && (IsService(oldUser) || IsPersistent(oldUser))) {
2438             /* The service should collide the new user off. */
2439             oldUser->timestamp = timestamp - 1;
2440             irc_user(oldUser);
2441         }
2442         if (oldUser->timestamp > timestamp) {
2443             /* "Old" user is really newer; remove them */
2444             DelUser(oldUser, 0, 1, "Overruled by older nick");
2445         } else {
2446             /* User being added is too new; do not add them to
2447              * clients, but do add them to the server's list, since it
2448              * will send a KILL and QUIT soon. */
2449             ignore_user = 1;
2450         }
2451     }
2452
2453     /* create new usernode and set all values */
2454     uNode = calloc(1, sizeof(*uNode));
2455     uNode->nick = strdup(nick);
2456     safestrncpy(uNode->ident, ident, sizeof(uNode->ident));
2457     safestrncpy(uNode->info, userinfo, sizeof(uNode->info));
2458     safestrncpy(uNode->hostname, hostname, sizeof(uNode->hostname));
2459     safestrncpy(uNode->numeric, numeric, sizeof(uNode->numeric));
2460     irc_p10_pton(&uNode->ip, realip);
2461
2462     if (irc_in_addr_is_ipv4(uNode->ip)) {
2463       make_virtip((char*)irc_ntoa(&uNode->ip), (char*)irc_ntoa(&uNode->ip), uNode->cryptip);
2464       make_virthost((char*)irc_ntoa(&uNode->ip), uNode->hostname, uNode->crypthost);
2465     } else if (irc_in_addr_is_ipv6(uNode->ip)) {
2466       make_ipv6virthost((char*)irc_ntoa(&uNode->ip), uNode->hostname, uNode->crypthost);
2467     }
2468
2469     uNode->timestamp = timestamp;
2470     modeList_init(&uNode->channels);
2471     uNode->uplink = uplink;
2472     if (++uNode->uplink->clients > uNode->uplink->max_clients) {
2473         uNode->uplink->max_clients = uNode->uplink->clients;
2474     }
2475     uNode->num_local = base64toint(numeric+strlen(uNode->uplink->numeric), 3) & uNode->uplink->num_mask;
2476     uNode->uplink->users[uNode->num_local] = uNode;
2477     mod_usermode(uNode, modes);
2478     if (ignore_user)
2479         return uNode;
2480
2481     dict_insert(clients, uNode->nick, uNode);
2482     if (dict_size(clients) > max_clients) {
2483         max_clients = dict_size(clients);
2484         max_clients_time = now;
2485     }
2486     if (IsLocal(uNode))
2487         irc_user(uNode);
2488     for (n=0; n<nuf_used; n++)
2489         if (nuf_list[n](uNode))
2490             break;
2491
2492     if ((uNode->loc == 1) && (uNode->handle_info))
2493         send_func_list(uNode);
2494
2495     return uNode;
2496 }
2497
2498 /* removes user from it's server's hash table and nick hash table */
2499 void
2500 DelUser(struct userNode* user, struct userNode *killer, int announce, const char *why)
2501 {
2502     unsigned int n;
2503
2504     verify(user);
2505
2506     /* mark them as dead, in case anybody cares */
2507     user->dead = 1;
2508
2509     /* remove pending adduser commands */
2510     wipe_adduser_pending(NULL, user);
2511
2512     /* remove user from all channels */
2513     while (user->channels.used > 0)
2514         DelChannelUser(user, user->channels.list[user->channels.used-1]->channel, false, 0);
2515
2516     /* Call these in reverse order so ChanServ can update presence
2517        information before NickServ nukes the handle_info. */
2518     for (n = duf_used; n > 0; )
2519         duf_list[--n](user, killer, why);
2520
2521     user->uplink->clients--;
2522     user->uplink->users[user->num_local] = NULL;
2523     if (IsOper(user))
2524         userList_remove(&curr_opers, user);
2525     /* remove from global dictionary, but not if after a collide */
2526     if (user == dict_find(clients, user->nick, NULL))
2527         dict_remove(clients, user->nick);
2528
2529     if (IsInvisible(user))
2530         invis_clients--;
2531
2532     if (announce) {
2533         if (IsLocal(user))
2534             irc_quit(user, why);
2535         else
2536             irc_kill(killer, user, why);
2537     }
2538
2539     modeList_clean(&user->channels);
2540     /* We don't free them, in case we try to privmsg them or something
2541      * (like when a stupid oper kills themself).  We just put them onto
2542      * a list of clients that get freed after processing each line.
2543      */
2544     if (dead_users.size)
2545         userList_append(&dead_users, user);
2546     else
2547         free_user(user);
2548 }
2549
2550 static void call_oper_funcs(struct userNode *user);
2551
2552 void mod_usermode(struct userNode *user, const char *mode_change) {
2553     int add = 1;
2554     const char *word = mode_change;
2555
2556     if (!user || !mode_change)
2557         return;
2558
2559     call_user_mode_funcs(user, mode_change);
2560
2561     while (*word != ' ' && *word) word++;
2562     while (*word == ' ') word++;
2563     while (1) {
2564 #define do_user_mode(FLAG) do { if (add) user->modes |= FLAG; else user->modes &= ~FLAG; } while (0)
2565         switch (*mode_change++) {
2566         case 0: case ' ': return;
2567         case '+': add = 1; break;
2568         case '-': add = 0; break;
2569         case 'o':
2570             if (add) {
2571                 if(!IsOper(user)) { /* Dont re-oper an oper */
2572                     userList_append(&curr_opers, user);
2573                     call_oper_funcs(user);
2574                 }
2575             } else {
2576                 userList_remove(&curr_opers, user);
2577             }
2578             do_user_mode(FLAGS_OPER);
2579             break;
2580         case 'O': do_user_mode(FLAGS_LOCOP); break;
2581         case 'i': do_user_mode(FLAGS_INVISIBLE);
2582             if (add)
2583                 invis_clients++;
2584             else
2585                 invis_clients--;
2586             break;
2587         case 'w': do_user_mode(FLAGS_WALLOP); break;
2588         case 's': do_user_mode(FLAGS_SERVNOTICE); break;
2589         case 'd': do_user_mode(FLAGS_DEAF); break;
2590         case 'k': do_user_mode(FLAGS_SERVICE); break;
2591         case 'g': do_user_mode(FLAGS_GLOBAL); break;
2592         // sethost - reed/apples
2593         // case 'h': do_user_mode(FLAGS_HELPER); break;
2594         // I check if there's an 'h' in the first part, and if there,
2595         // then everything after the space becomes their new host.
2596         case 'h': do_user_mode(FLAGS_SETHOST);
2597             if (*word) {
2598                 char sethost[MAXLEN];
2599                 unsigned int ii;
2600                 for (ii=0; (*word != ' ') && (*word != '\0'); )
2601                     sethost[ii++] = *word++;
2602                 sethost[ii] = 0;
2603                 while (*word == ' ')
2604                     word++;
2605                 safestrncpy(user->sethost, sethost, sizeof(user->sethost));
2606             }
2607             break;
2608         case 'x': do_user_mode(FLAGS_HIDDEN_HOST); break;
2609         case 'r':
2610             if (*word) {
2611                 char tag[MAXLEN];
2612                 unsigned int ii;
2613                 for (ii=0; (*word != ' ') && (*word != '\0'); )
2614                     tag[ii++] = *word++;
2615                 tag[ii] = 0;
2616                 while (*word == ' ')
2617                     word++;
2618                 call_account_func(user, tag);
2619             }
2620             break;
2621         case 'f':
2622             if (*word) {
2623                 char host[MAXLEN];
2624                 unsigned int ii;
2625                 for (ii=0; (*word != ' ') && (*word != '\0'); )
2626                     host[ii++] = *word++;
2627                 host[ii] = 0;
2628                 while (*word == ' ')
2629                     word++;
2630                 assign_fakehost(user, host, 0);
2631             }
2632             break;
2633         }
2634 #undef do_user_mode
2635     }
2636 }
2637
2638 struct mod_chanmode *
2639 mod_chanmode_parse(struct chanNode *channel, char **modes, unsigned int argc, unsigned int flags, short base_oplevel)
2640 {
2641     struct mod_chanmode *change;
2642     unsigned int ii, in_arg, ch_arg, add;
2643
2644     if (argc == 0)
2645         return NULL;
2646     if (!(change = mod_chanmode_alloc(argc - 1)))
2647         return NULL;
2648
2649     for (ii = ch_arg = 0, in_arg = add = 1;
2650          (modes[0][ii] != '\0') && (modes[0][ii] != ' ');
2651          ++ii) {
2652         switch (modes[0][ii]) {
2653         case '+':
2654             add = 1;
2655             break;
2656         case '-':
2657             add = 0;
2658             break;
2659 #define do_chan_mode(FLAG) do { if (add) change->modes_set |= (FLAG), change->modes_clear &= ~(FLAG); else change->modes_clear |= (FLAG), change->modes_set &= ~(FLAG); } while(0)
2660         case 'C': do_chan_mode(MODE_NOCTCPS); break;
2661         case 'D': do_chan_mode(MODE_DELAYJOINS); break;
2662         case 'c': do_chan_mode(MODE_NOCOLORS); break;
2663         case 'i': do_chan_mode(MODE_INVITEONLY); break;
2664         case 'm': do_chan_mode(MODE_MODERATED); break;
2665         case 'n': do_chan_mode(MODE_NOPRIVMSGS); break;
2666         case 'p': do_chan_mode(MODE_PRIVATE); break;
2667         case 'r': do_chan_mode(MODE_REGONLY); break;
2668         case 's': do_chan_mode(MODE_SECRET); break;
2669         case 't': do_chan_mode(MODE_TOPICLIMIT); break;
2670         case 'S': do_chan_mode(MODE_STRIPCOLOR); break;
2671         case 'M': do_chan_mode(MODE_MODUNREG); break;
2672         case 'N': do_chan_mode(MODE_NONOTICE); break;
2673         case 'Q': do_chan_mode(MODE_NOQUITMSGS); break;
2674         case 'T': do_chan_mode(MODE_NOAMSG); break;
2675         case 'O': do_chan_mode(MODE_OPERSONLY); break;
2676         case 'Z': do_chan_mode(MODE_SSLONLY); break;
2677         case 'L': do_chan_mode(MODE_HIDEMODE); break;
2678         case 'z':
2679           if (!(flags & MCP_REGISTERED)) {
2680            do_chan_mode(MODE_REGISTERED);
2681           } else {
2682            mod_chanmode_free(change);
2683            return NULL;
2684           }
2685           break;
2686 #undef do_chan_mode
2687         case 'l':
2688             if (add) {
2689                 if (in_arg >= argc)
2690                     goto error;
2691                 change->modes_set |= MODE_LIMIT;
2692                 change->new_limit = atoi(modes[in_arg++]);
2693             } else {
2694                 change->modes_set &= ~MODE_LIMIT;
2695                 change->modes_clear |= MODE_LIMIT;
2696             }
2697             break;
2698         case 'k':
2699             if (add) {
2700                 if (in_arg >= argc)
2701                     goto error;
2702                 change->modes_set |= MODE_KEY;
2703                 safestrncpy(change->new_key, modes[in_arg++], sizeof(change->new_key));
2704             } else {
2705                 change->modes_clear |= MODE_KEY;
2706                 if (!(flags & MCP_KEY_FREE)) {
2707                     if (in_arg >= argc)
2708                         goto error;
2709                     in_arg++;
2710                 }
2711             }
2712             break;
2713         case 'U':
2714             if (add)
2715             {
2716               if (in_arg >= argc)
2717                   goto error;
2718               change->modes_set |= MODE_UPASS;
2719               safestrncpy(change->new_upass, modes[in_arg++], sizeof(change->new_upass));
2720             } else {
2721                 change->modes_clear |= MODE_UPASS;
2722                 if (!(flags & MCP_UPASS_FREE)) {
2723                     if (in_arg >= argc)
2724                         goto error;
2725                     in_arg++;
2726                 }
2727             }
2728             break;
2729         case 'A':
2730             if (add) {
2731                 if (in_arg >= argc)
2732                     goto error;
2733                 change->modes_set |= MODE_APASS;
2734                 safestrncpy(change->new_apass, modes[in_arg++], sizeof(change->new_apass));
2735             } else {
2736                 change->modes_clear |= MODE_APASS;
2737                 if (!(flags & MCP_APASS_FREE)) {
2738                     if (in_arg >= argc)
2739                       goto error;
2740                     in_arg++;
2741                 }
2742             }
2743             break;
2744         case 'b':
2745             if (!(flags & MCP_ALLOW_OVB))
2746                 goto error;
2747             if (in_arg >= argc)
2748                 goto error;
2749             change->args[ch_arg].mode = MODE_BAN;
2750             if (!add)
2751                 change->args[ch_arg].mode |= MODE_REMOVE;
2752             change->args[ch_arg++].u.hostmask = modes[in_arg++];
2753             break;
2754         case 'e':
2755             if (!(flags & MCP_ALLOW_OVB))
2756                 goto error;
2757             if (in_arg >= argc)
2758                 goto error;
2759             change->args[ch_arg].mode = MODE_EXEMPT;
2760             if (!add)
2761                 change->args[ch_arg].mode |= MODE_REMOVE;
2762             change->args[ch_arg++].u.hostmask = modes[in_arg++];
2763             break;
2764         case 'o': case 'h': case 'v':
2765         {
2766             struct userNode *victim;
2767             char *oplevel_str;
2768             int oplevel;
2769
2770             if (in_arg >= argc)
2771                 goto error;
2772             oplevel_str = strchr(modes[in_arg], ':');
2773             if (oplevel_str)
2774             {
2775                 /* XXYYY M #channel +o XXYYY:<oplevel> */
2776                 *oplevel_str++ = '\0';
2777                 oplevel = parse_oplevel(oplevel_str);
2778                 if (oplevel <= base_oplevel && !(flags & MCP_FROM_SERVER))
2779                     oplevel = base_oplevel + 1;
2780             }
2781             else if (channel->modes & MODE_UPASS)
2782                 oplevel = base_oplevel + 1;
2783             else
2784                 oplevel = -1;
2785
2786             /* Check that oplevel is within bounds. */
2787             if (oplevel > MAXOPLEVEL)
2788                 oplevel = MAXOPLEVEL;
2789
2790             if (!(flags & MCP_ALLOW_OVB))
2791                 goto error;
2792             if (in_arg >= argc)
2793                 goto error;
2794
2795             if (modes[0][ii] == 'o')
2796                 change->args[ch_arg].mode = MODE_CHANOP;
2797             else if (modes[0][ii] == 'h')
2798                 change->args[ch_arg].mode = MODE_HALFOP;
2799             else if (modes[0][ii] == 'v')
2800                 change->args[ch_arg].mode = MODE_VOICE;
2801
2802             if (!add)
2803                 change->args[ch_arg].mode |= MODE_REMOVE;
2804             if (flags & MCP_FROM_SERVER)
2805                 victim = GetUserN(modes[in_arg++]);
2806             else
2807                 victim = GetUserH(modes[in_arg++]);
2808             if (!victim)
2809                 continue;
2810             if ((change->args[ch_arg].u.member = GetUserMode(channel, victim)))
2811             {
2812                 /* Apply the oplevel change */
2813                 change->args[ch_arg].u.member->oplevel = oplevel;
2814                 ch_arg++;
2815             }
2816             break;
2817         }
2818         default:
2819             if (!(flags & MCP_FROM_SERVER))
2820                 goto error;
2821             break;
2822         }
2823     }
2824     change->argc = ch_arg; /* in case any turned out to be ignored */
2825     if (change->modes_set & MODE_SECRET) {
2826         change->modes_set &= ~(MODE_PRIVATE);
2827         change->modes_clear |= MODE_PRIVATE;
2828     } else if (change->modes_set & MODE_PRIVATE) {
2829         change->modes_set &= ~(MODE_SECRET);
2830         change->modes_clear |= MODE_SECRET;
2831     }
2832     return change;
2833   error:
2834     mod_chanmode_free(change);
2835     return NULL;
2836 }
2837
2838 struct chanmode_buffer {
2839     char modes[MAXLEN];
2840     char args[MAXLEN];
2841     struct chanNode *channel;
2842     struct userNode *actor;
2843     unsigned int modes_used;
2844     unsigned int args_used;
2845     size_t chname_len;
2846     unsigned int is_add : 1;
2847     unsigned int is_chanop : 1;
2848 };
2849
2850 static void
2851 mod_chanmode_append(struct chanmode_buffer *buf, char ch, const char *arg)
2852 {
2853     size_t arg_len = strlen(arg);
2854     if (buf->modes_used > (MAXMODEPARAMS) ||
2855         buf->modes_used + buf->args_used + buf->chname_len + arg_len > 450) {
2856         memcpy(buf->modes + buf->modes_used, buf->args, buf->args_used);
2857         buf->modes[buf->modes_used + buf->args_used] = '\0';
2858         irc_mode((buf->is_chanop ? buf->actor : NULL), buf->channel, buf->modes);
2859         buf->modes[0] = buf->is_add ? '+' : '-';
2860         buf->modes_used = 1;
2861         buf->args_used = 0;
2862     }
2863     buf->modes[buf->modes_used++] = ch;
2864     buf->args[buf->args_used++] = ' ';
2865     memcpy(buf->args + buf->args_used, arg, arg_len);
2866     buf->args_used += arg_len;
2867 }
2868
2869 void
2870 mod_chanmode_announce(struct userNode *who, struct chanNode *channel, struct mod_chanmode *change)
2871 {
2872     struct chanmode_buffer chbuf;
2873     unsigned int arg;
2874     struct modeNode *mn;
2875     char int_buff[32], mode = '\0';
2876
2877     assert(change->argc <= change->alloc_argc);
2878     memset(&chbuf, 0, sizeof(chbuf));
2879     chbuf.channel = channel;
2880     chbuf.actor = who;
2881     chbuf.chname_len = strlen(channel->name);
2882
2883     mn = GetUserMode(channel, who);
2884     if ((mn && (mn->modes & MODE_CHANOP)) || off_channel)
2885         chbuf.is_chanop = 1;
2886
2887     /* First remove modes */
2888     chbuf.is_add = 0;
2889     if (change->modes_clear) {
2890         if (mode != '-')
2891             chbuf.modes[chbuf.modes_used++] = mode = '-';
2892 #define DO_MODE_CHAR(BIT, CHAR) if (change->modes_clear & MODE_##BIT) chbuf.modes[chbuf.modes_used++] = CHAR
2893         DO_MODE_CHAR(PRIVATE, 'p');
2894         DO_MODE_CHAR(SECRET, 's');
2895         DO_MODE_CHAR(MODERATED, 'm');
2896         DO_MODE_CHAR(TOPICLIMIT, 't');
2897         DO_MODE_CHAR(INVITEONLY, 'i');
2898         DO_MODE_CHAR(NOPRIVMSGS, 'n');
2899         DO_MODE_CHAR(LIMIT, 'l');
2900         DO_MODE_CHAR(DELAYJOINS, 'D');
2901         DO_MODE_CHAR(REGONLY, 'r');
2902         DO_MODE_CHAR(NOCOLORS, 'c');
2903         DO_MODE_CHAR(NOCTCPS, 'C');
2904         DO_MODE_CHAR(STRIPCOLOR, 'S');
2905         DO_MODE_CHAR(MODUNREG, 'M');
2906         DO_MODE_CHAR(NONOTICE, 'N');
2907         DO_MODE_CHAR(NOQUITMSGS, 'Q');
2908         DO_MODE_CHAR(NOAMSG, 'T');
2909         DO_MODE_CHAR(OPERSONLY, 'O');
2910         DO_MODE_CHAR(REGISTERED, 'z');
2911         DO_MODE_CHAR(SSLONLY, 'Z');
2912         DO_MODE_CHAR(HIDEMODE, 'L');
2913 #undef DO_MODE_CHAR
2914         if (change->modes_clear & channel->modes & MODE_KEY)
2915             mod_chanmode_append(&chbuf, 'k', channel->key);
2916         if (change->modes_clear & channel->modes & MODE_UPASS)
2917             mod_chanmode_append(&chbuf, 'U', channel->upass);
2918         if (change->modes_clear * channel->modes & MODE_APASS)
2919             mod_chanmode_append(&chbuf, 'A', channel->apass);
2920     }
2921     for (arg = 0; arg < change->argc; ++arg) {
2922         if (!(change->args[arg].mode & MODE_REMOVE))
2923             continue;
2924         if (mode != '-')
2925             chbuf.modes[chbuf.modes_used++] = mode = '-';
2926         switch (change->args[arg].mode & ~MODE_REMOVE) {
2927         case MODE_BAN:
2928             mod_chanmode_append(&chbuf, 'b', change->args[arg].u.hostmask);
2929             break;
2930         case MODE_EXEMPT:
2931             mod_chanmode_append(&chbuf, 'e', change->args[arg].u.hostmask);
2932             break;
2933         default:
2934             if (change->args[arg].mode & MODE_CHANOP)
2935                 mod_chanmode_append(&chbuf, 'o', change->args[arg].u.member->user->numeric);
2936             if (change->args[arg].mode & MODE_HALFOP)
2937                 mod_chanmode_append(&chbuf, 'h', change->args[arg].u.member->user->numeric);
2938             if (change->args[arg].mode & MODE_VOICE)
2939                 mod_chanmode_append(&chbuf, 'v', change->args[arg].u.member->user->numeric);
2940             break;
2941         }
2942     }
2943
2944     /* Then set them */
2945     chbuf.is_add = 1;
2946     if (change->modes_set) {
2947         if (mode != '+')
2948             chbuf.modes[chbuf.modes_used++] = mode = '+';
2949 #define DO_MODE_CHAR(BIT, CHAR) if (change->modes_set & MODE_##BIT) chbuf.modes[chbuf.modes_used++] = CHAR
2950         DO_MODE_CHAR(PRIVATE, 'p');
2951         DO_MODE_CHAR(SECRET, 's');
2952         DO_MODE_CHAR(MODERATED, 'm');
2953         DO_MODE_CHAR(TOPICLIMIT, 't');
2954         DO_MODE_CHAR(INVITEONLY, 'i');
2955         DO_MODE_CHAR(NOPRIVMSGS, 'n');
2956         DO_MODE_CHAR(DELAYJOINS, 'D');
2957         DO_MODE_CHAR(REGONLY, 'r');
2958         DO_MODE_CHAR(NOCOLORS, 'c');
2959         DO_MODE_CHAR(NOCTCPS, 'C');
2960         DO_MODE_CHAR(STRIPCOLOR, 'S');
2961         DO_MODE_CHAR(MODUNREG, 'M');
2962         DO_MODE_CHAR(NONOTICE, 'N');
2963         DO_MODE_CHAR(NOQUITMSGS, 'Q');
2964         DO_MODE_CHAR(NOAMSG, 'T');
2965         DO_MODE_CHAR(OPERSONLY, 'O');
2966         DO_MODE_CHAR(REGISTERED, 'z');
2967         DO_MODE_CHAR(SSLONLY, 'Z');
2968         DO_MODE_CHAR(HIDEMODE, 'L');
2969 #undef DO_MODE_CHAR
2970         if(change->modes_set & MODE_KEY)
2971             mod_chanmode_append(&chbuf, 'k', change->new_key);
2972         if (change->modes_set & MODE_UPASS)
2973             mod_chanmode_append(&chbuf, 'U', change->new_upass);
2974         if (change->modes_set & MODE_APASS)
2975             mod_chanmode_append(&chbuf, 'A', change->new_apass);
2976         if(change->modes_set & MODE_LIMIT) {
2977             sprintf(int_buff, "%d", change->new_limit);
2978             mod_chanmode_append(&chbuf, 'l', int_buff);
2979         }
2980     }
2981     for (arg = 0; arg < change->argc; ++arg) {
2982         if (change->args[arg].mode & MODE_REMOVE)
2983             continue;
2984         if (mode != '+')
2985             chbuf.modes[chbuf.modes_used++] = mode = '+';
2986         switch (change->args[arg].mode) {
2987         case MODE_BAN:
2988             mod_chanmode_append(&chbuf, 'b', change->args[arg].u.hostmask);
2989             break;
2990         case MODE_EXEMPT:
2991             mod_chanmode_append(&chbuf, 'e', change->args[arg].u.hostmask);
2992             break;
2993         default:
2994             if (change->args[arg].mode & MODE_CHANOP)
2995                 mod_chanmode_append(&chbuf, 'o', change->args[arg].u.member->user->numeric);
2996             if (change->args[arg].mode & MODE_HALFOP)
2997                 mod_chanmode_append(&chbuf, 'h', change->args[arg].u.member->user->numeric);
2998             if (change->args[arg].mode & MODE_VOICE)
2999                 mod_chanmode_append(&chbuf, 'v', change->args[arg].u.member->user->numeric);
3000             break;
3001         }
3002     }
3003
3004     /* Flush the buffer and apply changes locally */
3005     if (chbuf.modes_used > 0) {
3006         memcpy(chbuf.modes + chbuf.modes_used, chbuf.args, chbuf.args_used);
3007         chbuf.modes[chbuf.modes_used + chbuf.args_used] = '\0';
3008         irc_mode((chbuf.is_chanop ? chbuf.actor : NULL), chbuf.channel, chbuf.modes);
3009     }
3010     mod_chanmode_apply(who, channel, change);
3011 }
3012
3013 char *
3014 mod_chanmode_format(struct mod_chanmode *change, char *outbuff)
3015 {
3016     unsigned int used = 0;
3017     assert(change->argc <= change->alloc_argc);
3018     if (change->modes_clear) {
3019         outbuff[used++] = '-';
3020 #define DO_MODE_CHAR(BIT, CHAR) if (change->modes_clear & MODE_##BIT) outbuff[used++] = CHAR
3021         DO_MODE_CHAR(PRIVATE, 'p');
3022         DO_MODE_CHAR(SECRET, 's');
3023         DO_MODE_CHAR(MODERATED, 'm');
3024         DO_MODE_CHAR(TOPICLIMIT, 't');
3025         DO_MODE_CHAR(INVITEONLY, 'i');
3026         DO_MODE_CHAR(NOPRIVMSGS, 'n');
3027         DO_MODE_CHAR(LIMIT, 'l');
3028         DO_MODE_CHAR(KEY, 'k');
3029         DO_MODE_CHAR(UPASS, 'U');
3030         DO_MODE_CHAR(APASS, 'A');
3031         DO_MODE_CHAR(DELAYJOINS, 'D');
3032         DO_MODE_CHAR(REGONLY, 'r');
3033         DO_MODE_CHAR(NOCOLORS, 'c');
3034         DO_MODE_CHAR(NOCTCPS, 'C');
3035         DO_MODE_CHAR(STRIPCOLOR, 'S');
3036         DO_MODE_CHAR(MODUNREG, 'M');
3037         DO_MODE_CHAR(NONOTICE, 'N');
3038         DO_MODE_CHAR(NOQUITMSGS, 'Q');
3039         DO_MODE_CHAR(NOAMSG, 'T');
3040         DO_MODE_CHAR(OPERSONLY, 'O');
3041         DO_MODE_CHAR(REGISTERED, 'z');
3042         DO_MODE_CHAR(SSLONLY, 'Z');
3043         DO_MODE_CHAR(HIDEMODE, 'L');
3044 #undef DO_MODE_CHAR
3045     }
3046     if (change->modes_set) {
3047         outbuff[used++] = '+';
3048 #define DO_MODE_CHAR(BIT, CHAR) if (change->modes_set & MODE_##BIT) outbuff[used++] = CHAR
3049         DO_MODE_CHAR(PRIVATE, 'p');
3050         DO_MODE_CHAR(SECRET, 's');
3051         DO_MODE_CHAR(MODERATED, 'm');
3052         DO_MODE_CHAR(TOPICLIMIT, 't');
3053         DO_MODE_CHAR(INVITEONLY, 'i');
3054         DO_MODE_CHAR(NOPRIVMSGS, 'n');
3055         DO_MODE_CHAR(DELAYJOINS, 'D');
3056         DO_MODE_CHAR(REGONLY, 'r');
3057         DO_MODE_CHAR(NOCOLORS, 'c');
3058         DO_MODE_CHAR(NOCTCPS, 'C');
3059         DO_MODE_CHAR(STRIPCOLOR, 'S');
3060         DO_MODE_CHAR(MODUNREG, 'M');
3061         DO_MODE_CHAR(NONOTICE, 'N');
3062         DO_MODE_CHAR(NOQUITMSGS, 'Q');
3063         DO_MODE_CHAR(NOAMSG, 'T');
3064         DO_MODE_CHAR(OPERSONLY, 'O');
3065         DO_MODE_CHAR(REGISTERED, 'z');
3066         DO_MODE_CHAR(SSLONLY, 'Z');
3067         DO_MODE_CHAR(HIDEMODE, 'L');
3068 #undef DO_MODE_CHAR
3069         switch (change->modes_set & (MODE_KEY|MODE_LIMIT|MODE_APASS|MODE_UPASS)) {
3070         /* Doing this implementation has been a pain in the arse, I hope I didn't forget a possible combination */
3071         case MODE_KEY|MODE_LIMIT|MODE_APASS|MODE_UPASS:
3072             used += sprintf(outbuff+used, "lkAU %d %s %s %s", change->new_limit, change->new_key,change->new_apass, change->new_upass);
3073             break;
3074
3075         case MODE_KEY|MODE_LIMIT|MODE_APASS:
3076             used += sprintf(outbuff+used, "lkA %d %s %s", change->new_limit, change->new_key, change->new_apass);
3077             break;
3078         case MODE_KEY|MODE_LIMIT|MODE_UPASS:
3079             used += sprintf(outbuff+used, "lkU %d %s %s", change->new_limit, change->new_key, change->new_upass);
3080             break;
3081         case MODE_KEY|MODE_APASS|MODE_UPASS:
3082             used += sprintf(outbuff+used, "kAU %s %s %s", change->new_key, change->new_apass, change->new_upass);
3083             break;
3084
3085         case MODE_KEY|MODE_APASS:
3086             used += sprintf(outbuff+used, "kA %s %s", change->new_key, change->new_apass);
3087             break;
3088         case MODE_KEY|MODE_UPASS:
3089             used += sprintf(outbuff+used, "kU %s %s", change->new_key, change->new_upass);
3090             break;
3091         case MODE_KEY|MODE_LIMIT:
3092             used += sprintf(outbuff+used, "lk %d %s", change->new_limit, change->new_key);
3093             break;
3094
3095         case MODE_LIMIT|MODE_UPASS:
3096             used += sprintf(outbuff+used, "lU %d %s", change->new_limit, change->new_upass);
3097             break;
3098         case MODE_LIMIT|MODE_APASS:
3099             used += sprintf(outbuff+used, "lA %d %s", change->new_limit, change->new_apass);
3100             break;
3101         case MODE_APASS|MODE_UPASS:
3102             used += sprintf(outbuff+used, "AU %s %s", change->new_apass, change->new_upass);
3103
3104         case MODE_LIMIT|MODE_APASS|MODE_UPASS:
3105             used += sprintf(outbuff+used, "lAU %d %s %s", change->new_limit, change->new_apass, change->new_upass);
3106             break;
3107
3108         case MODE_APASS:
3109             used += sprintf(outbuff+used, "A %s", change->new_apass);
3110             break;
3111         case MODE_UPASS:
3112             used += sprintf(outbuff+used, "U %s", change->new_upass);
3113             break;
3114         case MODE_KEY:
3115             used += sprintf(outbuff+used, "k %s", change->new_key);
3116             break;
3117         case MODE_LIMIT:
3118             used += sprintf(outbuff+used, "l %d", change->new_limit);
3119             break;
3120         }
3121     }
3122     outbuff[used] = 0;
3123     return outbuff;
3124 }
3125
3126 static int
3127 clear_chanmode(struct chanNode *channel, const char *modes)
3128 {
3129     unsigned int remove;
3130
3131     for (remove = 0; *modes; modes++) {
3132         switch (*modes) {
3133         case 'o': remove |= MODE_CHANOP; break;
3134         case 'h': remove |= MODE_HALFOP; break;
3135         case 'v': remove |= MODE_VOICE; break;
3136         case 'p': remove |= MODE_PRIVATE; break;
3137         case 's': remove |= MODE_SECRET; break;
3138         case 'm': remove |= MODE_MODERATED; break;
3139         case 't': remove |= MODE_TOPICLIMIT; break;
3140         case 'i': remove |= MODE_INVITEONLY; break;
3141         case 'n': remove |= MODE_NOPRIVMSGS; break;
3142         case 'k':
3143             remove |= MODE_KEY;
3144             channel->key[0] = '\0';
3145             break;
3146         case 'A':
3147             remove |= MODE_APASS;
3148             channel->apass[0] = '\0';
3149             break;
3150         case 'U':
3151             remove |= MODE_UPASS;
3152             channel->upass[0] = '\0';
3153             break;
3154         case 'l':
3155             remove |= MODE_LIMIT;
3156             channel->limit = 0;
3157             break;
3158         case 'b': remove |= MODE_BAN; break;
3159         case 'e': remove |= MODE_EXEMPT; break;
3160         case 'D': remove |= MODE_DELAYJOINS; break;
3161         case 'r': remove |= MODE_REGONLY; break;
3162         case 'c': remove |= MODE_NOCOLORS; break;
3163         case 'C': remove |= MODE_NOCTCPS; break;
3164         case 'S': remove |= MODE_STRIPCOLOR; break;
3165         case 'M': remove |= MODE_MODUNREG; break;
3166         case 'N': remove |= MODE_NONOTICE; break;
3167         case 'Q': remove |= MODE_NOQUITMSGS; break;
3168         case 'T': remove |= MODE_NOAMSG; break;
3169         case 'O': remove |= MODE_OPERSONLY; break;
3170         case 'z': remove |= MODE_REGISTERED; break;
3171         case 'Z': remove |= MODE_SSLONLY; break;
3172         case 'L': remove |= MODE_HIDEMODE; break;
3173         }
3174     }
3175
3176     if (!remove)
3177         return 1;
3178
3179     /* Remove simple modes. */
3180     channel->modes &= ~remove;
3181
3182     /* If removing bans, kill 'em all. */
3183     if ((remove & MODE_BAN) && channel->banlist.used) {
3184         unsigned int i;
3185         for (i=0; i<channel->banlist.used; i++)
3186             free(channel->banlist.list[i]);
3187         channel->banlist.used = 0;
3188     }
3189
3190     /* If removing exempts, kill 'em all. */
3191     if ((remove & MODE_EXEMPT) && channel->exemptlist.used) {
3192         unsigned int i;
3193         for (i=0; i<channel->exemptlist.used; i++)
3194             free(channel->exemptlist.list[i]);
3195         channel->exemptlist.used = 0;
3196     }
3197
3198     /* Remove member modes. */
3199     if ((remove & (MODE_CHANOP | MODE_HALFOP | MODE_VOICE)) && channel->members.used) {
3200         int mask = ~(remove & (MODE_CHANOP | MODE_HALFOP | MODE_VOICE));
3201         unsigned int i;
3202
3203         for (i = 0; i < channel->members.used; i++)
3204             channel->members.list[i]->modes &= mask;
3205     }
3206
3207     return 1;
3208 }
3209
3210 void
3211 reg_privmsg_func(struct userNode *user, privmsg_func_t handler)
3212 {
3213     unsigned int numeric = user->num_local;
3214     if (numeric >= num_privmsg_funcs) {
3215         int newnum = numeric + 8;
3216         privmsg_funcs = realloc(privmsg_funcs, newnum*sizeof(privmsg_func_t));
3217         memset(privmsg_funcs+num_privmsg_funcs, 0, (newnum-num_privmsg_funcs)*sizeof(privmsg_func_t));
3218         num_privmsg_funcs = newnum;
3219     }
3220     if (privmsg_funcs[numeric])
3221         log_module(MAIN_LOG, LOG_WARNING, "re-registering new privmsg handler for numeric %d", numeric);
3222     privmsg_funcs[numeric] = handler;
3223 }
3224
3225 void
3226 unreg_privmsg_func(struct userNode *user, privmsg_func_t handler)
3227 {
3228     unsigned int x;
3229
3230     if (!user || handler)
3231       return; /* this really only works with users */
3232
3233     memset(privmsg_funcs+user->num_local, 0, sizeof(privmsg_func_t));
3234
3235     for (x = user->num_local+1; x < num_privmsg_funcs; x++)
3236        memmove(privmsg_funcs+x-1, privmsg_funcs+x, sizeof(privmsg_func_t));
3237
3238     privmsg_funcs = realloc(privmsg_funcs, num_privmsg_funcs*sizeof(privmsg_func_t));
3239     num_privmsg_funcs--;
3240 }
3241
3242
3243 void
3244 reg_notice_func(struct userNode *user, privmsg_func_t handler)
3245 {
3246     unsigned int numeric = user->num_local;
3247     if (numeric >= num_notice_funcs) {
3248         int newnum = numeric + 8;
3249         notice_funcs = realloc(notice_funcs, newnum*sizeof(privmsg_func_t));
3250         memset(notice_funcs+num_notice_funcs, 0, (newnum-num_notice_funcs)*sizeof(privmsg_func_t));
3251         num_notice_funcs = newnum;
3252     }
3253     if (notice_funcs[numeric])
3254         log_module(MAIN_LOG, LOG_WARNING, "re-registering new notice handler for numeric %d", numeric);
3255     notice_funcs[numeric] = handler;
3256 }
3257
3258 void
3259 unreg_notice_func(struct userNode *user, privmsg_func_t handler)
3260 {
3261     unsigned int x;
3262
3263     if (!user || handler)
3264           return; /* this really only works with users */
3265
3266     memset(notice_funcs+user->num_local, 0, sizeof(privmsg_func_t));
3267
3268     for (x = user->num_local+1; x < num_notice_funcs; x++)
3269        memmove(notice_funcs+x-1, notice_funcs+x, sizeof(privmsg_func_t));
3270
3271     memset(notice_funcs+user->num_local, 0, sizeof(privmsg_func_t));
3272     notice_funcs = realloc(notice_funcs, num_notice_funcs*sizeof(privmsg_func_t));
3273     num_notice_funcs--;
3274 }
3275
3276 void
3277 reg_oper_func(oper_func_t handler)
3278 {
3279     if (of_used == of_size) {
3280         if (of_size) {
3281             of_size <<= 1;
3282             of_list = realloc(of_list, of_size*sizeof(oper_func_t));
3283         } else {
3284             of_size = 8;
3285             of_list = malloc(of_size*sizeof(oper_func_t));
3286         }
3287     }
3288     of_list[of_used++] = handler;
3289 }
3290
3291 static void
3292 call_oper_funcs(struct userNode *user)
3293 {
3294     unsigned int n;
3295     if (IsLocal(user))
3296         return;
3297     for (n=0; n<of_used; n++)
3298         of_list[n](user);
3299 }
3300
3301 static void
3302 send_burst(void)
3303 {
3304     unsigned int i, hop, max_hop=1;
3305     dict_iterator_t it;
3306
3307     /* burst (juped) servers, closest first (except self, which is sent already) */
3308     for (i=0; i<ArrayLength(servers_num); i++)
3309         if (servers_num[i] && servers_num[i]->hops > max_hop)
3310             max_hop = servers_num[i]->hops;
3311     for (hop=1; hop<=max_hop; hop++) {
3312         for (i=0;i<ArrayLength(servers_num);i++) {
3313             if (servers_num[i]
3314                 && (servers_num[i]->hops == hop)
3315                 && (servers_num[i] != self->uplink))
3316                 irc_server(servers_num[i]);
3317         }
3318     }
3319
3320     /* burst local nicks */
3321     for (i=0; i<=self->num_mask; i++)
3322         if (self->users[i])
3323             irc_user(self->users[i]);
3324
3325     /* build dict of unbursted channel names (just copy existing channels) */
3326     unbursted_channels = dict_new();
3327     for (it = dict_first(channels); it; it = iter_next(it))
3328         dict_insert(unbursted_channels, iter_key(it), iter_data(it));
3329 }
3330
3331 /*
3332  * Oplevel parsing
3333  */
3334 static int
3335 parse_oplevel(char *str)
3336 {
3337     int oplevel = 0;
3338     while (isdigit(*str))
3339         oplevel = oplevel * 10 + *str++ - '0';
3340     return oplevel;
3341 }
3342